2009 flu pandemic in Japan

H1N1 in Japan

  Confirmed cases

  Deaths with confirmed infections

The 2009 Japan flu pandemic was an outbreak of the H1N1 and the Influenza A viruses across Japan. The World Health Organisation raised the pandemic alert for influenza to level 4 in April 2009 following a worldwide outbreak of the H1N1 influenza strain. The first Japanese infections of H1N1 and Influenza A were both recorded early in May 2009. In August 2009, the government estimated that the virus strains had infected about 760,000 people. At the height of the pandemic in October 2009, it was estimated that 20% of the Japanese population had been infected and that there were on average more than 20 infected people in each Japanese medical facility. By the end of 2009 the virus had killed 42 people. Japan put several measures in place to attempt to control the spread of infection including quarantining air travellers entering Japan who were suspected of having the virus and closing schools in areas of Japan with high numbers of infection. The pandemic ended in August 2010 when the World Health Organisation announced that worldwide influenza infection number were back to the seasonal average before the outbreak occurred.

Government reaction

In April, Japan's Ministry of Agriculture, Forestry and Fisheries instructed animal quarantine offices across the country to examine any live pigs being brought into the country to double-check for infection by the H1N1 strain of influenza.^[1] Japanese Agriculture Minister Shigeru Ishiba appeared on TV to reassure consumers regarding the safety of pork.^[2] The Japanese farm ministry said that it would not ask for restrictions on pork imports because pork was unlikely to be contaminated with the virus, and any virus would be killed in the cooking process anyway.^[3]

Timeline

April

April 28

• Following the World Health Organization's raising the pandemic alert level to Phase 4 (April 27 UTC),^[4] Japan's Health, Labour, and Welfare Minister, Yoichi Masuzoe, declared the outbreak of a new influenza strain in Mexico, the United States, and Canada.^[5] A task force was set up.^[5][6] The Japanese government installed a basic policy to block the virus at borders.^[5] At Narita Airport, in-flight quarantine inspection was initiated to check the health of passengers arriving from Mexico, the United States, and Canada.^[6]

April 30

• At Narita, a Japanese woman tested positive for influenza A on a flight from LA (but was found to be infected with the Hong Kong strain of influenza A, not with H1N1).^[7]

May

May 1

• Another suspected case was announced by Health, Labour, and Welfare Minister in a 17-year-old male Yokohama high school student,^[8] who had tested positive for influenza A the day earlier.^[7] He turned out to have the Soviet strain of influenza A.^[7]

Health officials check airline passengers before allowing disembarkation of an international flight back to Japan

May 8

• The first three cases of H1N1 in Japan were confirmed in patients who had spent time in Oakville, Canada and returned via Detroit.^[9][10]

May 10

• A fourth case was confirmed in a student who had returned from a school trip to Canada.^[11]

May 16

• Japan's first domestic case of infection was confirmed in Kobe in a male high school student without a history of traveling abroad. He was initially thought to have a seasonal flu, and therefor a Polymerase chain reaction (PCR) test had not been performed on him in a timely manner. Two other students were suspected, and 17 other students claimed flu-like symptoms, but the route of the infection was not traceable.^[12]
• An emergency meeting was held in Kobe, and the decision was made to close public schools and kindergartens in several wards--Higashinada, Nada, Chūō—and in a neighboring city, Ashiya, for seven days. The annual Kobe Festival, planned for that day and the next, was cancelled.^[13]
• The number of confirmed high school cases in Kobe reached 8 by nightfall, many were members of the same volleyball club who had recently competed in an inter-scholastic match. In Osaka prefecture, one high school student tested positive, her sample having been sent to the Infectious Disease Surveillance Center.^[14] Other 100 students at the same school and some of their family members exhibited flu-like symptoms.^[15]
• Based on the prefectural plan of measures against new flu, Hyogo prefecture declared a state of emergency. Schools in Hyogo, Kita, and Nagata wards were closed for one week.^[16]

World Health Organization Regions.

May 17

• 161 people were reported to have been in close contact with the infected students in Hyogo prefecture only.^[17]
• Masaro Kaji, an honorary professor at Kurume University, warned "There is a possibility of the H1N1 flu spreading among areas of frequent human traffic other than in the Kansai region, like Tokyo.
• The overall confirmed toll reached 56, including four cases discovered at Narita Airport in passengers returning from Canada.

May 18

• In Hyogo and Osaka prefectures, elementary, junior high and senior high schools were closed for a week.^[18]
• By evening, confirmed cases in Japan totaled 144: 140 domestic cases from Hyogo and Osaka prefectures, and four other cases found during quarantine inspection.^[18]
• Domestic cases include employees of a railway kiosk and a bank; therefore, several railway kiosks in Kobe were closed and 70 other bank workers who had worked with an infected employee were told to stay home.^[18]

Surgical masks selling out in Hyogo Prefecture due to Influenza A H1N1 2009 swine flu outbreak (Mexican Flu)

Due to fears of contracting the novel flu, some commuters on Osaka Loop Line wore surgical masks.

May 19

• According to Osaka's educational committee, about 2400 students among 198,000 left, and 19,000 reported symptoms including sore throat, nasal congestion, and fever.^[19]
• Tonooka Tatsuhito, former chief of the city of Otaru's public health center, reported "Because clinical presentation of novel flu and seasonal flu show the same symptoms, there is a possibility that unaware of novel flu, patients have been treated at ordinary clinic as if they had seasonal flu," and that "this time, a doctor of Kobe submit sample (of first confirmed male high school student who never went abroad and didn't even have fever at that time) by chance, so it was recognized as novel flu. The infection is not only a problem of Kansai area."^[20]
• To avoid false positive reporting, the Health, Labour and Welfare Ministry added to the diagnostic criteria for the novel flu that a patient have a record of overseas travel^[21] but Tokyo metropolitan changed its policy to detect early stage novel flu and perform inspection even if no record of travel abroad existed.^[22]

May 20

• Shiga Prefecture became the third prefecture to report infection: a 23-year-old man in Ōtsu.^[23]
• Tokyo Prefecture and Kanagawa Prefecture's Kawasaki city each announced their first confirmed cases^[23] in two 16-year-old high school girls, one living in Hachiōji in west Tokyo, and the other in Kawasaki.^[24] They went to the same Kawasaki high school and had traveled together from the United States, where they had attended a mock session of the United Nations.^[23][24] Although the student from Hachioji developed a fever during the flight, she tested negative to preliminary testing for influenza A and B at Narita airport, according to Tokyo officials.^[23][24]
• Confirmed cases in Japan reached 267 that day: 263 domestic cases from Hyogo, Osaka, Shiga, Tokyo and Kanagawa prefectures, and four other cases found during quarantine inspection.^[24]

May 21

• Kawasaki city apologized to national media at the Kawasaki press club for hiding their suspected case, saying the student's family hoped the case would not be made public until confirmed. The day prior, Kawasaki knew that she had tested positive in a simple test, but denied this fact in media inquiries, until they confirmed the case in a public announcement later that night.^[25]
• Tokyo announced its second confirmed case: a 36-year-old woman living in Meguro ward, who returned to Japan on May 19 after traveling to Florida and San Francisco, California, for about two weeks.^[26]
• Nara prefecture announced that of 1117 junior and senior high school students and faculty members who had fever and coughs, all had been interviewed by school doctors, seven of them visiting fever consultation clinics, and all had tested negative.^[27]
• Kyoto announced the first confirmed case its prefecture: a 10-year-old elementary-school boy.^[28]

May 22

• Saitama Prefecture announced its first confirmed case: a 29-year-old man of town of Washimiya, who travelled to Osaka and Kyoto on May 17 to May 19.^[29]
• By the morning of May 22, confirmed cases in Japan totaled 279: 275 domestic cases from Hyogo (146), Osaka (123), Tokyo (2), Kanagawa (1), Saitama (1), Kyoto (1) and Shiga (1) prefectures, and four other cases found during quarantine inspection.^[30]
• Six days after the first domestic infection case was confirmed,^[15] the government implemented a new policy, revising its guidelines on battling the novel strain of H1N1.^[31][32] The new policy grouped areas of Japan into two categories, depending on the number of confirmed patients.^[31][32]
  • In areas already with high or sharply rising numbers of confirmed cases, more flexible measures were to be applied which focused on preventing patients from developing serious symptoms; priority would be placed on treating people with underlying health problems such as diabetes and asthma; local authorities would take initiative in dealing with outbreaks, and school lessons could be suspended on a school-by-school basis or on a class-by-class basis.^[31][32]
  • In areas with few or no cases confirmed, strict measures were to remain in place to prevent the spread of infection; all infected patients would be hospitalized at medical institutions designated to treat cases of infectious diseases; Nearby schools or, those in a location at risk for spreading the virus, would be asked to suspend lessons.^[31][32]
• The government also called off blanket in-flight quarantine inspections on aircraft arriving from Mexico, the United States and Canada.^[31]
• Tokyo's third case was confirmed: a 25-year-old man from Mitaka who was in Osaka from May 14 to May 20.^[33]
• Another case was confirmed during quarantine inspection at Narita: a South Korean man who arrived from Chicago on May 21.^[34]

May 23

• Nursery schools and day care facilities reopened in Hyogo prefecture.^[33]
• The number of newly confirmed domestic cases had been declining since May 20, according to a data report released on May 23 from the Ministry of Health, Labour and Welfare.^[35]
• In preparation for resumption of school on May 25, teachers in a Kobe municipal high school made masks of folded paper-towels, for students who couldn't bring in their own due to low supply at stores.^[36]

May 24

• The sixth quarantine case was confirmed at Narita: a 41-year-old Japan Airlines ground crewman, who had been on a business trip to Seattle and then arrived at Narita Airport from Vancouver on May 24.^[37]
• Confirmed cases in Japan reached 343 that day: 337 domestic cases and six other cases found during quarantine inspection.^[38]

May 25

• Most schools in Osaka and Hyogo prefectures resume.^[39]
• Fukuoka Prefecture announced the first confirmed case in Kyushu region: a U.S. citizen who visited his wife's parents' home.^[40]

May 26

• Shizuoka announced the first confirmed case from Shizuoka Prefecture: a seven-year-old boy who returned from the Philippines on May 22.^[41]
• Two U.S. nationals were confirmed ill on May 26 during quarantine inspection: a man and his child who arrived at Narita on May 25.^[42][43]
• By 9:30 PM that night, there were 353 confirmed cases in Japan, including one from Shizuoka prefecture and eight cases that had been found during quarantine inspection.^[44]

May 27

• First confirmed case in Wakayama Prefecture: a 28-year-old man who returned from a trip to Hawaii on May 23.^[45]
• Two out of four new cases in Kobe were students of high schools that had been closed until May 24; The schools suspend classes for an additional week.^[46]
• Shizuoka announced another confirmed case: a younger sister of the first confirmed boy.^[41]
• By the evening, confirmed cases in Japan numbered 364, 356 domestic cases and eight cases found during quarantine inspection.^[47]

May 28

• 367 confirmed cases by the evening.^[48]
• The Mayor of Kobe held a press conference saying "[The spread of the novel H1N1 virus] seems to have ceased in the city. I send a message that Kobe is safe in the meantime. Please visit Kobe."^[49] The chairman of the city's medical association scoffed that it was too early to make such an announcement, that the mayor should have waited for at least seven consecutive days to pass with no new cases.^[50]

May 29

• 370 confirmed cases, three of the new cases are male high school students from Kobe, Nishinomiya and Kakogawa.^[51]
• Train crews and employees of JR West and Kansai stop wearing masks. Japan Airlines and All Nippon Airways also lifted their mask-wearing requirements at Kobe's airport and onboard flights going the North American route.^[52] The Kinki area baseball league decided to cancel the spring Kinki rubber-ball baseball tournament because the number of infected patients was still increasing.
• The National Institute of Infectious Diseases and the National Institute of Technology and Evaluation announced that the spread of novel H1N1 in the Kansai area was considered caused by the same strain of the virus, after having analyzed strains in four patients in Osaka and five patients in Hyogo prefectures. Two cases involved strains were genetically identical, and the seven others each had a difference of one or two mutated genes. It was found by this time that this strain was different from the one originally found at the Narita quarantine on May 8.^[53][54]

May 30

• First confirmed case in Chiba prefecture is announced.^{[Footnote 1]} in a 19-year-old female restaurant employee who works at a passenger-only area in Narita Airport and lives in a company dormitory in Sakura.^[55][56][57] She had not travelled abroad recently or visited the Kansai area. Chiba prefecture attempts to contact 200 of her associates and friends.
• 377 total national cases confirmed. Six new cases are from in Hyogo and Osaka, and one from Chiba.^[55][56][57]

June

• June 10: Japan reported first case in Tottori city, Tottori Prefecture.

• June 11: Number of cases rises to 532, including 9 students at a Tokyo high school.^[58][59]

• June 26: Number of cases rises to 1049.^[60]

July

July 2

• The first case of oseltamivir-resistant virus in Asia was announced in Japan, in a woman who had been taking oseltamivir prophylactically.^[61]

July 24

• The number of cases exceeded 5000. The Health, Labour and Welfare Ministry stopped counting individual patients and moved to a "cluster control" phase, monitoring group infections at schools and working places.^[62][63] National Institute of Infectious Diseases stop updating laboratory confirmed cases.^[64]

August

August 15

• A 57-year-old man from Okinawa prefecture is the first person to die with the illness in Japan.^[65][66][67]

August 18

• A second 77-year-old man in Kobe city, Hyōgo Prefecture died. He had diabetes and had been undergoing dialysis.^[68]

August 19

• A third person, an 81-year-old woman in Nagoya city, Aichi Prefecture dies. She had myeloma multiplex and cardiac failure.^[69]
• The Minister of Health, Labor and Welfare repeated his warnings.^[70]

August 21

• IDSC (Infectious Disease Surveillance Center) estimates 110,000 new flu patients increased during the week of August 10 to 16. After Mid-July, most of detected influenza type is AH1pdm. IDSC declared flu outbreak.^[71]

August 26

• A 74-year-old woman died of pneumonia in Nagoya city reported as 4th death in Japan. She was not PCR tested, but simple test resulted in type A influenza and three other patient in the hospital had been confirmed as novel flu. She had no underlying diseases.^[72]

August 27

• A fifth person, a man of 30s died of pneumonia in Nagano city, Nagano Prefecture. He had an enlarged heart, chronic heart failure and diabetes.^[73]

August 28

• Ministry of Health, Labour and Welfare announced estimated and assumable number that approximately 760,000 people to be infected and 46,400 to be hospitalized per day in peak time frame of October 2009, 20% of total Japanese infected in country wise and 30% in city area.^[74][75]

August 29

• The 6th death occurred in Kagoshima Prefecture. A woman in her 60s had cancer in digestive system and lungs, considered to be high-risk against infection.^[76]
• The 7th death linked to new flu in Japan occurred. A 38-year-old woman in Hyogo Prefecture has epilepsy and commuting to welfare facility but considered no underlying disease. On 27th, she get high fever of 39 degrees and next day she had simple test and diagnosed as type A, treated with oseltamivir, and rest in her home but her condition suddenly changed early in the morning of 29th, and confirmed dead at 4 AM. After her death, PCR test was performed and confirmed to be novel flu. Her direct reason for death is unknown.^[77]
• A 5-year-old boy in Shiga Prefecture, confirmed the fifth oseltamivir resistant patient in Japan. Although he was given oseltamivir, high fever continued. Now he recovered and ex-hospital.^[78]

August 30

• The 8th death occurred in Hokkaidō Prefecture was the first death as health worker. A woman in her 40s died after contracting the flu, although the immediate cause of death was acute heart failure and it has not been determined if the flu contributed to her death.^[79] She was responsible person of researching group infection of junior high school in Rishiri town. She had high blood pressure, but no underlying disease.^[80]

September

September 1

• The 9th death occurred in Kōchi Prefecture. A man in his 70s who had diabetes and obstructive lung disease. He was diagnosed A positive by a simple test, but linkage to the death is unknown.^[81][82]

September 2

• The 10th death occurred in Kizugawa city, Kyoto Prefecture. A 69-year-old man died of fulminant myocarditis. He had chronic heart and lung disease. The Prefectural government announced that flu might have caused his myocarditis.^[81][82]
• A group infection rise of 1,330 for August 24 to 30, a 1.5-fold of previous week. Group infections have been increasing for five consecutive weeks.^[83]

September 6

• The 11th presumable death from H1N1 in Japan occurred. A 90-year-old man in Kami District, Miyagi Prefecture who had nontuberculous mycobacterium. He had a fever on August 30; type-A positive by simple test was confirmed, so he was prescribed oseltamivir but died. His direct cause of death was worsening of pneumonia. By PCR test, novel flu was not confirmed.^[84]

September 9

• The 12th death occurred in Osaka Prefecture. A 45-year-old with no underlying diseases was prescribed oseltamivir and his fever went down, but his family found him unconscious. Confirmed as novel flu and the direct cause of death was ischemic heart disease.^[85][86]

September 10

• The 13th death occurred in Aomori Prefecture. A man in his 90s came down with a fever of 41.2 degree and was diagnosed A-positive by a simple test. He was prescribed oseltamivir and his fever went down, but he was confirmed dead on September 10. His direct cause of death was acute pneumonia. He had been bedridden by the aftereffects of a stroke and frequently suffered aspiration pneumonia.^[87][88][89]

September 15

• The 14th death occurred in Haebaru town, Shimajiri district, Okinawa Prefecture. A 24-year-old who had no underlying disease. On August 26, she was diagnosed as Type-A at a local clinic and prescribed Zanamivir and was sent back home. On August 31, she was diagnosed with acute viral pneumonia and it was confirmed to be related to novel influenza A, at which point she was immediately taken into intensive-care unit but died. Her direct cause of death was subarachnoid bleeding by using respirator and external ventricular assist device.^{[90][91][92][93]}

September 17

• The 15th death occurred in Yokohama city, Kanagawa Prefecture. A 12-year-old who had bronchial asthma. On September 2, he developed a　fever of 39 degrees with vomiting. A simple test for the flu was negative but he was taken to another clinic to treat his bronchial asthma. His fever went down to 37 degrees so he returned home. On September 3, his fever rose to 40 degrees and he was diagnosed as having myocarditis, taken into the intensive-care unit but the result of a second simple test was also negative. On September 10, a blood test showed a type-A positive. On September 14, Yokohama municipal health laboratory confirmed his case as the new strain of flu. His direct cause of death was subarachnoid bleeding.^[94][95][96]

September 20

• The 16th death occurred in Kurume, Fukuoka Prefecture. A woman in her 60s died. The 17th death occurred in Kobe.

September 21

• The 18th death occurred in Moriyama city, Shiga Prefecture. A 7-year-old boy who had a history of periodic fever syndrome, but the link between his death is unknown. On the 18th, he was healthy and commuting to his elementary school. On the 19th, in the morning, he had a fever of 38 degrees and cough, prescribed paracetamol at a clinic. Next day his temperature raised to 40.6 degrees, went into convulsions and was determined type-A positive by a simple test. He was transferred to another hospital and prescribed oseltamivir but fell unconscious. Suspected of having acute viral encephalitis, he was taken into the ICU of Shiga University of Medical Science Hospital and attached to a respiratory system. His case was confirmed as novel flu by a genetic test. On the 21st his temperature went down to 34.6 and his blood pressure also went down. At 21:25 he died of viral encephalitis.^[97][98][99]

September 23

• The 19th death occurred in Kishiwada city, Osaka Prefecture. A 70-year-old woman who had the underlying complications of diabetes, high blood pressure, and leukemia. Her direct cause of death was influenza pneumonia.^[100][101]

September 25

• Tokyo Metropolitan government announced novel flu alert because average influenza patients per medical facility exceed 10.24. This means that there is the possibility of a major outbreak occurring within four weeks.^{[102][103][104]}

September 30

• The 20th death occurred in Kitakyūshū city, Fukuoka Prefecture. A 49-year-old man who had no underlying diseases. In mid September, he claimed to have breathing difficulties. On the 21st, he had a fever of 39.7 degrees and was diagnosed with pneumonia. A simple test was negative. On the 22nd, his condition was complicated by hepatic and kidney failure. He was taken to the ICU, but died. His direct cause of death was Multiple organ dysfunction syndrome (MODS). The case was confirmed as novel flu on October 1.^[105][106]

October

October 4

• The 21st death occurred in Sakai city, Osaka Prefecture. On September 29, a woman in her 40's with pre-existing high blood pressure developed a sore throat, cough, and fever. She was hospitalized on October 2. Simple tests had been negative three times but on October 3 she was prescribed oseltamivir, and PCR tested. Her condition suddenly changed the next day, with acute kidney failure and respiratory failure so she was taken into the ICU where she died. Her direct cause of death was MODS caused by high lethality catastrophic group A streptococcal infection. On October 5 PCR confirmed novel flu.^[107][108]

October 6

• The 22nd death occurred in Tokyo Metropolis. A 5-year-old with no underlying diseases developed a fever on October 2. The next day his temperature reached 40 degrees, he was diagnosed A-positive by simple test and prescribed oseltamivir. But after he was back home, he vomited, exhibited disordered consciousness, and developed a cramp so he was transported by emergency vehicle to a hospital. He lost consciousness and developed MODS. He was attached to a respiratory system. On October 5 he was confirmed to have novel flu and died the next day. His direct cause of death was viral encephalitis.^{[109][110][111][112]}

October 7

• The first human to human infection of oseltamivir resistant novel flu occurred. A teenager residing in Sapporo city, Hokkaidō prefecture was the 8th to have oseltamivir resistant swine influenza virus in Japan, but unlike the previous seven patients, she was never prescribed oseltamivir.^[113]

October 9

• The 23rd death occurred in Asahikawa city, Hokkaidō prefecture. A man in his 20's with the underlying diseases of asthma, diabetes and heart disease became feverish on October 6. The morning of October 8, family members found the man unconscious; at the hospital he was diagnosed type A positive. He suffered cardiac arrest, but was resuscitated and taken into the ICU, where he was attached to a respirator and dosed with oseltamivir. He died the same night.^[114][115]

October 13

• The 24th death was a 4-year-old boy in Tokyo. He had no underlying diseases. On October 4, he had a fever of 40 degrees. The next day a simple test showed type-A positive and he was subscribed oseltamivir. While en route home, he developed a cramp so was hospitalized. On October 6 he lost consciousness and suffered cardiac arrest. He never recovered. His direct cause of death was acute encephalitis.^[116][117]

October 14

• The 25th death was a 16-year-old male high school student in Kiyosu city, Aichi Prefecture. He had underlying bronchial asthma. He had a fever on October 11. The next day, he showed disordered consciousness so he was transported to a hospital. On October 3 he stopped breathing and died the next day. He was confirmed as having novel flu.^[118][119]
• The 26th death was an 8-year-old girl in Nishinomiya city, Hyōgo Prefecture. She had no underlying diseases. On October 12, she had a fever of nearly 39 degrees and rested at her home, but became unconscious in the evening. A test showed A-positive and she was hospitalized and attached to a respirator but she died. Her cause of death was MODS including viral encephalitis.^{[118][119][120]}

October 15

• The 27th death was a 5-year-old boy in Tsuzuki-ku, Yokohama city. He had no underlying diseases. He was feverish from the 12th. The next day a simple test showed A-positive, was given oseltamivir. In the night, he had respiratory problems, and was taken to the ICU but died of severe pneumonia and acute myocarditis.^[121]
• Yokohama city and Sagamihara city, Kanagawa Prefecture announced novel flu alert because the average number of influenza patients per medical facilitiy is 24.89 in Yokohama, and 16.54 in Sagamihara.^[122]
• Sapporo city in Hokkaidō announced novel flu alert because the average number of influenza patients per medical facility in Sapporo is 51.66.^[123]

October 18

• The 28th death was a 36-year-old woman in Kawasaki city, Kanagawa Prefecture. She was residing in Tokyo but had underlying diseases (asthma and diabetes), regularly went to a hospital in the city. She showed cold like symptoms on October 10, had a fever on 11th. Visit hospital on 12th, showed breathing difficulty so she was immediately hospitalized and taken into ICU. She was confirmed as novel flu on 15th. Died of a severe pneumonia on October 18.^[124][125]

October 20

• The 29th death was a 3-year-old boy in Tokyo Metropolis. He had no underlying diseases. At the evening of October 19, he had a fever of 38.0 degree so went to a nearby clinic. Diagnosed as common cold and prescribed cough medicine. The next day, his temperature rise to 39.6 and diagnosed as type A positive by simple test, prescribed oseltamivir. At the night, his condition suddenly changed and became unconscious. When he was emergency transported to a hospital, he was already in cardiac arrest, confirmed dead and was novel flu. His cause of death is considered to be a viral encephalitis.^{[126][127][128][129]}
• The 30th death was a 51-year-old woman in Atsugi city, Kanagawa Prefecture. She had no underlying disease. On Cot 13, she had cough and fever. On October 19, she claimed loss of muscle strength of both legs and was hospitalized. On October 20 in the morning, she had breathing difficulty and pain in her chest, and died after changed hospital. Her cause of death was suspected to be acute myocarditis triggered by the infection.^[130]

October 21

• The Ministry of Agriculture, Forestry and Fisheries announced that a pig in Osaka Prefecture was infected. Osaka city requested that the farm not sell or move the pigs. In this case, human-to-animal transmission is suspected.^[131][132]

October 22

• The 31st death was a 67-year-old woman in Kawaguchi city, Saitama Prefecture. She had underlying diseases, diabetes, high blood pressure and stroke. She had a fever on October 3, was diagnosed as type-A influenza and given oseltamivir on October 6. The next day her temperature dropped but rose again on 8th, she was hospitalized having difficulty breathing. On the 14th, she was confirmed to have novel flu by PCR test. On October 22, her condition suddenly deteriorated and at 5 pm, she was confirmed as dead. Her cause of death was influenza pneumonia.^[133]

October 23

• The 32nd death was a man of his 50's in Fukui city, Fukui Prefecture. He had underlying diseases of diabetes, high blood pressure and stroke. He had cough and fever on September 27, visited Fukui Health and Welfare Center, and diagnosed as pneumonia. Although a simple test resulted negative, novel flu was considered from the symptoms so he was oseltamivir. On 30 his condition worsened and had a fever of 38.5 degree so taken into ICU. On October 1, confirmed as novel flu by PCR test. On October 11, he was attached to a respirator. Died October 23 at 5am. His cause of death was pneumonia.^[134][135]
• National Institute of Infectious Diseases estimated weekly first visit influenza patients increased to 830,000 more than the previous week. Average patients per medical facility were highest in Hokkaidō, (57.93) and Aichi Prefecture (31.78).^{[136][137][138]}

October 25

• The 33rd death was a 13-year-old female junior high school student in Iruma city, Saitama Prefecture. She had no underlying diseases. On October 22 she had a fever of 38.8 degree so she left school early, was prescribed zanamivir but fever didn't go down in next day and claimed pain in her chest. October 24 she was prescribed antipyretic. Later, she was repeatedly vomiting, and was emergency transported to a hospital, but confirmed dead at the hospital. Her cause of death was viral myocarditis.^[139]

October 26

• The 34th death was a man of his 80's in Nara city, Nara Prefecture. He had an underlying disease of diabetes. His suspected cause of death was a cardiovascular failure caused by sepsis.^[140]
• The 35th death was a woman of her 80's in Shijōnawate city, Osaka Prefecture. She had underlying diseases of chronic kidney disease. Her cause of death was sudden worsening of chronic kidney disease and pneumonia.^[141]

October 26

• The 36th death was a 57-year-old man in Ishinomaki city, Miyagi Prefecture. He had underlying diseases of diabetes and chronic kidney disease. His cause of death was heart failure and MODS.^[142]
• Yokohama city health and safety section announced that a 6-year-old boy confirmed to be infected oseltamivir resistant virus. First in Kanagawa Prefecture, 12th in Japan.^[143]

October 27

• The 37th death was a 63-year-old woman in Tokyo. She had an underlying disease, myocardial disease. Her cause of death was cardiac arrest.^[144]

October 29

• The 38th death was a man in his 20's in Uto city, Kumamoto Prefecture. On October 27 he had coughed; the next day he visited a medical facility. He had a fever of 39 degrees and was dehydrated. Simple test resulted negative, but his family member had novel flu, was prescribed oseltamivir. On the evening of October 29 he was found dying at his home. Genetic test confirmed he was novel flu. His cause of death and if he had underlying diseases is unknown.^[145]
• The 39th death was a 6-year-old girl in Sakai city, Osaka Prefecture. She had cerebral palsy. On the night of October 27, she had a fever of 37 degrees, and visited a clinic the next day. Simple test resulted in A-positive, she was prescribed oseltamivir and sent home. On the morning of October 29 she went into cardiorespiratory arrest and died.^[146]

October 30

• The 40th death was a 46-year-old man in Daitō city, Osaka Prefecture. He had no underlying diseases. He had a fever on October 28. The next day he visited a clinic and was prescribed Oseltamivir. Before dawn on October 30 he had delirium. His cause of death was acute pneumonia.^[147]

November

November 1

• The 41st death was a 30-year-old woman in Ukyō ward, Kyoto Prefecture.^[148]

• A 2-year-old girl in Morioka city, Iwate Prefecture died.^[149]

December

December 2

151 young flu patients have exhibited abnormal behavior such as depression and uttering gibberish. ^[150]

See also

• Swine influenza
• public health
• 2009 flu pandemic vaccine
• Flu season

References

1. "Japan on high alert for swine flu after an outbreak in Mexico". Kyodo News. 2009-04-26. Archived from the original on April 29, 2009. Retrieved 2009-04-26.
2. MOFA issues red travel alert for Mexico on swine flu Archived April 29, 2009, at the Wayback Machine.. CNA
3. "FACTBOX-Asia moves to ward off new flu virus". Reuters. April 26, 2009. Archived from the original on April 30, 2009. Retrieved 22 May 2009.
4. Dr Margaret Chan (WHO Director-General) (2009-04-27). "Swine influenza". World Health Organization. Archived from the original on May 20, 2009. Retrieved 2009-05-23.
5. "Govt officially declares outbreak of new flu in N. America". DAILY YOMIURI ONLINE. The Yomiuri Shimbun. 2009-04-29. Retrieved 2009-05-23.
6. "Japan enters crisis mode for swine flu". IHT/Asahi. The Asahi Shimbun. 2009-04-29. Archived from the original on May 2, 2009. Retrieved 2009-05-23.
7. "Suspected new flu case proves to be false alarm". DAILY YOMIURI ONLINE. The Yomiuri Shimbun. 2009-05-02. Retrieved 2009-05-26.
8. "Japan's 1st suspected case of new influenza virus detected". Kyodo News. 2009-05-01. Archived from the original on May 3, 2009. Retrieved 2009-05-26.
9. "Japáo confirma primeiros três casos de gripe H1N1" (in Portuguese). O Globo. 2009-05-08. Retrieved 2009-05-08.
10. Kubota, Yoko (May 8, 2009). "Japan confirms 3 cases of new flu strain". Reuters. Archived from the original on May 15, 2009. Retrieved 2009-05-09.
11. "NHK- Japan Confirms 4th Case Of Swine Flu". Pacific News Center. 2009-05-10. Retrieved 2009-05-10.
12. "First domestic case of H1N1 flu infection confirmed in Japan". The Japan Times Online. The Japan Times Ltd. 2009-05-16. Retrieved 2009-05-16.
13. Kitano, Masayuki (May 16, 2009). "Western Japan city to close schools due to new flu". Reuters. Archived from the original on May 28, 2009. Retrieved 2009-05-16.
14. "Pandemic (H1N1) 2009". nih.go.jp. Retrieved March 26, 2015.
15. "First domestic case of H1NI flu infection confirmed in Japan". The Japan Times Ltd. Kyodo News. 2009-05-16. Retrieved 2009-05-27.
16. "新型インフル　県が緊急事態宣言". The Kobe Shinbun. May 16, 2009. Archived from the original on May 18, 2009. Retrieved 2009-05-16.
17. "新型インフル：兵庫県内の８人の「濃厚接触者」は１６１人". 毎日新聞. 2009-05-17. Archived from the original on May 19, 2009. Retrieved 2009-05-17.
18. "H1N1 flu surges in Kansai". The Japan Times Online. The Japan Times Ltd. 2009-05-19. Retrieved 2009-05-23.
19. "２万人が「風邪」症状". 2009-05-19. Retrieved 2009-05-19.
20. "新型インフルエンザ：「季節性」と混同？　流行長引き、見逃したまま治療". 2009-05-18. Archived from the original on May 24, 2009. Retrieved 2009-05-19.
21. "「渡航歴」診断基準で新型見逃す　感染急拡大の原因". May 19, 2009. Archived from the original on May 21, 2009. Retrieved 2009-05-19.
22. "新型インフルエンザ：都が早期探知へ新方針　無渡航でも遺伝子検査　／東京". 2009-05-19. Archived from the original on May 20, 2009. Retrieved 2009-05-19.
23. "New-flu cases appear in, near Tokyo". 2009-05-21. Retrieved 2009-05-26.
24. "Flu infiltrates Tokyo as patient tally leaps to 267". The Japan Times Online. The Japan Times Ltd. 2009-05-20. Retrieved 2009-05-26.
25. "新型疑い「なし」虚偽回答　川崎市、報道各社に謝罪". May 21, 2009. Archived from the original on July 17, 2011. Retrieved 2009-05-21.
26. "新型インフル：東京・目黒の３０代女性感染". May 21, 2009. Archived from the original on May 27, 2009. Retrieved 2009-05-21.
27. "発熱症状あった奈良の生徒ら、すべて「陰性」　県発表". May 21, 2009. Archived from the original on May 26, 2009. Retrieved 2009-05-21.
28. "新型インフル、国内感染者291人に　京都で初の感染確認". NIKKEI.NET 社会ニュース. 日本経済新聞社. 2009-05-21. Archived from the original on May 26, 2009. Retrieved 2009-05-21.
29. "Governor's Comment Regarding New Strain Influenza in Saitama (PDF)" (PDF). May 22, 2009. Archived from the original (PDF) on February 8, 2010. Retrieved 2009-05-23.
30. "Novel Influenza A(H1N1) (22 May 2009): Situation update of identified cases and responses in Japan-10". Infectious Disease Surveillance Center. 2009-05-22. Retrieved 2009-05-27.
31. "New flu countermeasures eased". IHT/Asahi. The Asahi Shimbun. 2009-05-23. Retrieved 2009-05-23.
32. "Govt relaxes measures for new flu". DAILY YOMIURI ONLINE. The Yomiuri Shimbun. 2009-05-23. Retrieved 2009-05-23.
33. "Hyogo nurseries, day care centers reopen". The Japan Times Online. The Japan Times Ltd. Kyodo News. 2009-05-24. Retrieved 2009-05-27.
34. "Japan revamps policy to tackle new flu as number of cases rises to 302". Japan Today. GPlusMedia. 2009-05-22. Retrieved 2009-05-27.
35. "Cases of new flu declining, data show". The Yomiuri Shimbun. 2009-05-25. Retrieved 2009-05-27.
36. "学校再開へ...でもマスク品薄、教職員ら手作りで準備中". The Yomiuri Shimbun. May 23, 2009. Archived from the original on May 24, 2009. Retrieved 2009-05-19.
37. 新型インフルエンザ：米出張帰りの日航社員、感染－－成田検疫 (in Japanese). The Mainichi Newspapers. 2009-05-25. Archived from the original on May 28, 2009. Retrieved 2009-05-27.
38. "新型インフルエンザ：感染者３４３人に". THE MAINICHI NEWSPAPERS. 2009-05-25. Archived from the original on May 28, 2009. Retrieved 2009-05-27.
39. "Schools reopen in Osaka and Hyogo". NHK WORLD. 2009-05-25. Archived from the original on February 28, 2010. Retrieved 2009-05-25.
40. "新型インフル：福岡滞在中の米国男性が感染　九州で初確認". THE MAINICHI NEWSPAPERS. May 25, 2009. Archived from the original on May 28, 2009. Retrieved 2009-05-25.
41. "New-flu infections in Japan come to 355". Japan Today. GPlusMedia. 2009-05-27. Retrieved 2009-05-27.
42. "Two U.S. nationals confirmed infected with A/H1N1 flu in Japan". Xinhua News Agency. 2009-05-26. Archived from the original on May 29, 2009. Retrieved 2009-05-26.
43. 成田着の米国人父子２人の感染確認　新型インフル (in Japanese). The Asahi Shimbun. 2009-05-25. Archived from the original on May 30, 2009. Retrieved 2009-05-27.
44. 比から帰国の７歳男児が感染...国内感染者３５３人に. YOMOURI ONLINE (in Japanese). The Yomiuri Shimbun. 2009-05-26. Retrieved 2009-05-27.
45. "新型インフル：和歌山市でも確認　感染者数は３６１人に". THE MAINICHI NEWSPAPERS. 2009-05-27. Archived from the original on May 28, 2009. Retrieved 2009-05-27.
46. "【新型インフル】和歌山で初の感染者神戸では再び私立高休校". The Sankei Shimbun. May 27, 2009. Archived from the original on May 30, 2009. Retrieved 2009-05-27.
47. 新型インフル：国内感染者３６４人に (in Japanese). The Mainichi Newspapers. 2009-05-27. Archived from the original on May 29, 2009. Retrieved 2009-05-27.
48. "国内の新型インフル感染３６７人 新たに尼崎市の女児ら確認". 47NEWS. 2009-05-28. Retrieved 2009-05-28.
49. "神戸「ひとまず安心」宣言、市長「この経験生かしたい」". The Yomiuri Shimbun. 2009-05-28. Retrieved 2009-05-28.
50. "市長の「安心宣言、性急すぎる」 神戸市医師会長が苦言". 47NEWS. 2009-05-28. Retrieved 2009-05-28.
51. "国内の感染３７０人に 新型インフルエンザ". 47NEWS. 2009-05-29. Retrieved 2009-05-30.
52. "【新型インフル】駅員もすっきり、マスク外す　大阪". The Sankei Shimbun. May 29, 2009. Archived from the original on June 1, 2009. Retrieved 2009-05-30.
53. "新型インフル、関西の集団感染は同一ウイルスか...遺伝子解読". The Yomiuri Shimbun. May 29, 2009. Archived from the original on May 30, 2009. Retrieved 2009-05-30.
54. "Flu virus in Hyogo and Osaka appear identical". NHK WORLD. 2009-05-29. Retrieved 2009-05-30.
55. "新型インフル　成田空港の飲食店従業員が感染". asahi.com. 2009-05-30. Retrieved 2009-05-30.
56. "新型インフル：成田空港の飲食店従業員が感染　千葉". THE MAINICHI NEWSPAPERS. May 30, 2009. Archived from the original on June 1, 2009. Retrieved 2009-05-30.
57. "成田空港飲食店の女性従業員が新型インフル感染". The Yomiuri Shimbun. May 30, 2009. Archived from the original on June 1, 2009. Retrieved 2009-05-30.
58. "New-flu infections in Japan surpass 500". Retrieved 10 June 2009.
59. "New-flu infections confirmed at Tokyo high school". Retrieved 11 June 2009.
60. "WHO Influenza A(H1N1) – update 54". Archived from the original on June 28, 2009. Retrieved 28 June 2009.
61. Reuters, "Japan finds first case of H1N1 resistant to Tamiflu", Yoko Kubota, 2 July 2009
62. "新型インフル、国内感染5000人超す". Nikkei. July 24, 2009. Archived from the original on September 10, 2009. Retrieved 2009-08-16.
63. "新型インフルエンザ：国内感染５０００人超える　今後も拡大の恐れ". 2009-07-25. Archived from the original on July 28, 2009. Retrieved 2009-08-16.
64. "Pandemic (H1N1) 2009". nih.go.jp. Retrieved March 26, 2015.
65. Lies, Elaine (August 15, 2009). "Japan confirms first H1N1 death2". Reuters. Retrieved 2009-08-15.
66. "Japan records first death from swine flu". AFP. August 15, 2009. Retrieved 2009-08-15.
67. "Okinawan man, 57, confirmed as Japan's 1st death linked to new flu". Kyodo News. 16 August 2009. Retrieved 2009-08-19.
68. "Japan Has Second Swine Flu Fatality; Kobe Man Dies in Hospital". Bloomberg. August 18, 2009. Retrieved 2009-08-19.
69. "3rd flu death in Japan". Straits Times. August 19, 2009. Retrieved 2009-08-19.
70. "New flu epidemic in Japan has fully begun, health minister says". Kyodo News. 19 August 2009. Retrieved 2009-08-19.
71. "Japan's H1N1 cases at flu epidemic stage". The Japan Times. August 22, 2009. Retrieved 2009-08-22.
72. "794 new-flu group infections logged in 1 week; 4th death reported". Japan Today. August 27, 2009. Archived from the original on September 10, 2009. Retrieved 2009-08-30.
73. "5th death in Japan linked to new flu recorded as Nagano man succumbs". Japan Today. 28 August 2009. Retrieved 2009-08-30.
74. Yomiuri Shimbun 29 August 2009 ver.13S page 1
75. "Health ministry: up to 760,000 new swine flu cases a day by October". Mainichi Daily News. August 29, 2009. Archived from the original on September 10, 2009. Retrieved 2009-08-30.
76. "7th death linked to new flu confirmed in Hyogo after 6th in Kagoshima". Kyodo News International. August 29, 2009. Retrieved 2009-08-30.
77. "7th death linked to new flu confirmed in Hyogo". Archived from the original on September 10, 2009. Retrieved 2009-09-03.
78. "Pregnant women warned to protect against H1N1". The Japan Times Ltd. August 30, 2009. Retrieved 2009-08-30.
79. "Hokkaido woman dies after contracting new flu". September 1, 2009. Retrieved 2009-09-01.
80. "Health worker with swine flu dies in Hokkaido". Mainichi Japan. September 1, 2009. Archived from the original on September 7, 2009. Retrieved 2009-09-01.
81. "新型インフル死亡、国内１０人に...京都・高知で高齢者". The Yomiuri Shimbun. September 22, 2009. Archived from the original on September 10, 2009. Retrieved 2009-09-02.
82. "Another man with H1N1 flu virus dies in Japan (expired)". NHK WORLD. 2009-09-03. Retrieved 2009-09-03.
83. "1,330 influenza A group infections reported in 1 week in Japan". Japan Today. September 3, 2009. Archived from the original on September 10, 2009. Retrieved 2009-09-03.
84. "Flu readiness at hospitals uncertain". The Japan Times. September 9, 2009. Archived from the original on September 11, 2009. Retrieved 2009-09-09.
85. "新型インフル：大阪の４５歳男性会社員が死亡１２例目". THE MAINICHI NEWSPAPERS. September 9, 2009. Archived from the original on September 16, 2009. Retrieved 2009-09-14.
86. "大阪の感染男性、死因は虚血性心疾患". The Yomiuri Shimbun. September 11, 2009. Archived from the original on September 16, 2009. Retrieved 2009-09-14.
87. "新型インフル疑いの９０代男性が死亡青森". The Asahi Shimbun. September 11, 2009. Archived from the original on September 16, 2009. Retrieved 2009-09-14.
88. "新型インフル：青森で９０代の男性が死亡国内１３例目". THE MAINICHI NEWSPAPERS. September 11, 2009. Archived from the original on September 27, 2012. Retrieved 2009-09-14.
89. "新型インフル県内初の死者、９０代男性". The Asahi Shimbun. 2009-09-12. Retrieved 2009-09-14.
90. "Youngest death linked to new flu in Japan reported+". AP. September 15, 2009. Retrieved 2009-09-16.
91. "Youngest death linked to new flu in Japan reported". KYODO. September 15, 2009. Retrieved 2009-09-16.
92. "New flu patient without underlying disease dies (expired)". NHK World. 2009-09-15. Retrieved 2009-09-16.
93. "新型インフル：女性死亡県内２人目２４歳国内最少". THE MAINICHI NEWSPAPERS. September 16, 2009. Archived from the original on September 26, 2009. Retrieved 2009-09-19.
94. "12-year-old boy becomes youngest in Japan to die of new flu". Japan Today. September 18, 2009. Archived from the original on September 26, 2009. Retrieved 2009-09-19.
95. "12-year-old boy becomes youngest in Japan to die of new flu". Kyodo News. September 17, 2009. Archived from the original on September 26, 2009. Retrieved 2009-09-19.
96. "12-year-old boy with asthma dies of new flu (expired)". NHK World. 2009-09-18. Archived from the original on October 18, 2009. Retrieved 2009-09-19.
97. "7-year-old boy dies of new-flu infection in Shiga". Japan Today. September 22, 2009. Archived from the original on September 26, 2009. Retrieved 2009-09-23.
98. "7-year-old boy dies of H1N1 flu in Japan (expired)". NHK World. 2009-09-22. Retrieved 2009-09-23.
99. "7-year-old boy dies of new-flu infection". Kyodo News. September 22, 2009. Archived from the original on September 26, 2009. Retrieved 2009-09-23.
100. "「新型」１９人目の死者...大阪の７０歳女性". The Yomiuri Shimbun. September 23, 2009. Archived from the original on September 30, 2009. Retrieved 2009-09-28.
101. "【新型インフル】７０歳女性が死亡大阪". The Sankei Shimbun. 2009-09-23. Archived from the original on October 17, 2009. Retrieved 2009-09-28.
102. "Number of flu cases high in Tokyo, other urban areas". Japan Today. September 26, 2009. Archived from the original on September 30, 2009. Retrieved 2009-09-28.
103. "Tokyo may see big new flu outbreak within 4 weeks". NHK World. 2009-09-26. Retrieved 2009-09-28.
104. "インフルエンザの流行注意報発令都内のインフルエンザ発生状況". Tokyo Metropolitan government. September 25, 2009. Archived from the original on September 30, 2009. Retrieved 2009-09-28.. 2009-09-30.
105. "死亡後に新型インフル感染判明、北九州の４９歳". The Yomiuri Shimbun. 2009-10-02. Archived from the original on October 6, 2009. Retrieved 2009-10-04.
106. "新型インフル、４９歳男性死亡疑い例含め死者２０人に". The Asahi Shimbun. 2009-10-01. Archived from the original on October 4, 2009. Retrieved 2009-10-04.
107. "新型インフル感染４０歳代女性が死亡堺市". The Asahi Shimbun. 2009-10-07. Retrieved 2009-10-09.
108. "堺の死亡女性、新型インフル感染". The Sankei Shimbun. 2009-10-07. Retrieved 2009-10-09.
109. "5-yr-old boy dies from H1N1 flu in Tokyo". Japan Today. 9 October 2009. Retrieved 2009-10-09.
110. "【新型インフル】５歳男児が死亡国内最-0少都内で初の死者". The Sankei Shimbun. 2009-10-08. Archived from the original on October 11, 2009. Retrieved 2009-10-09.
111. "新型インフルで脳症、５歳児が死亡...国内最-0少". The Yomiuri Shimbun. 2009-10-08. Retrieved 2009-10-09.
112. "新型インフル、５歳男児が急性脳炎で死亡東京". The Asahi Shimbun. 2009-10-08. Archived from the original on October 11, 2009. Retrieved 2009-10-09.
113. "Tamiflu-resistant new flu detected in patient with no record of Tamiflu use". Japan Today. 8 October 2009. Retrieved 2009-10-09.
114. "新型感染で旭川の２０代男性死亡". The Hokkaido Shimbun Press. 2009-10-09. Archived from the original on October 14, 2009. Retrieved 2009-10-09.
115. "【新型インフル】北海道・旭川の２０代男性死亡ぜんそくの基礎疾患も". The Sankei Shimbun. 2009-10-09. Archived from the original on December 3, 2009. Retrieved 2009-10-09.
116. "4-year-old boy dies from new flu". Japan Today. 15 October 2009. Retrieved 2009-10-15.
117. "【新型インフル】４歳男児が死亡国内最少". The Sankei Shimbun. 2009-10-14. Archived from the original on October 28, 2009. Retrieved 2009-10-15.
118. "新型インフルエンザ：東京・愛知・兵庫で死者３人死亡、全国累計２６人に". THE MAINICHI NEWSPAPERS. 2009-10-15. Archived from the original on October 18, 2009. Retrieved 2009-10-15.
119. "High school boy and 2 children die of H1N1 flu". NHK World. 2009-10-15. Retrieved 2009-10-15.
120. "【新型インフル】兵庫県西宮市で８歳女児死亡国内２６人目". The Sankei Shimbun. October 14, 2009. Archived from the original on October 17, 2009. Retrieved 2009-10-15.
121. "横浜で新型インフル感染の５歳男児死亡". The Yomiuri Shimbun. 2009-10-15. Retrieved 2009-10-15.
122. "【新型インフル】横浜、相模原市がインフルエンザ注意報発令". The Sankei Shimbun. 2009-10-15. Archived from the original on October 18, 2009. Retrieved 2009-10-15.
123. "札幌でインフル警報". The Yomiuri Shimbun. 2009-10-15. Retrieved 2009-10-15.
124. "新型インフル、３６歳女性が死亡...糖尿など持病". The Yomiuri Shimbun. October 19, 2009. Archived from the original on October 20, 2009. Retrieved 2009-10-19.
125. "新型インフル：川崎で３６歳女性死亡死者は２８人に". THE MAINICHI NEWSPAPERS. October 19, 2009. Archived from the original on October 22, 2009. Retrieved 2009-10-19.
126. "Boy, 3, youngest to die from H1N1". NHK World. October 23, 2009. Retrieved 2009-10-23.
127. "3-year-old boy dies after contracting new flu". NHK World. 2009-10-22. Retrieved 2009-10-22.
128. "新型インフル、東京の３歳男児死亡基礎疾患なし". The Asahi Shimbun. October 22, 2009. Archived from the original on October 25, 2009. Retrieved 2009-10-22.
129. "新型インフル：脳症で都内の３歳男児死亡国内最少". THE MAINICHI NEWSPAPERS. October 22, 2009. Archived from the original on September 27, 2012. Retrieved 2009-10-22.
130. "新型インフル：埼玉と神奈川で女性が死亡死者３２人に". THE MAINICHI NEWSPAPERS. October 23, 2009. Archived from the original on October 26, 2009. Retrieved 2009-10-23.
131. "1st new-flu infection of pigs suspected in Japan". Japan Today. 21 October 2009. Retrieved 2009-10-22.
132. "First H1N1 pig infection suspected". The Japan Times. October 22, 2009. Retrieved 2009-10-22.
133. "【新型インフル】埼玉県内で初の死者６７歳女性". The Sankei Shimbun. 2009-10-23. Archived from the original on November 7, 2009. Retrieved 2009-10-23.
134. "新型インフル、県内初の死者基礎疾患持つ５０歳代男性". Fukui Shimbun. 2009-10-23. Archived from the original on October 25, 2009. Retrieved 2009-10-23.
135. "福井県内の５０歳代男性、新型インフルで死亡". The Yomiuri Shimbun. 2009-10-23. Retrieved 2009-10-23.
136. "Japan's H1N1 flu cases rise to 830,000". NHK World. 2009-10-23. Retrieved 2009-10-23.
137. "インフル受診増加、１週間８３万人に...未成年８割". The Yomiuri Shimbun. 2009-10-23. Retrieved 2009-10-23.
138. "インフル感染、北海道が最多に「警報」レベル超える". The Asahi Shimbun. October 23, 2009. Archived from the original on October 27, 2009. Retrieved 2009-10-23.
139. "新型インフル基礎疾患ない中２女子死亡". The Asahi Shimbun. 2009-10-27. Retrieved 2009-11-03.
140. "新型インフルエンザ：県内初の死者糖尿病患う８０代男性／奈良". THE MAINICHI NEWSPAPERS. 2009-10-27. Archived from the original on October 30, 2009. Retrieved 2009-11-03.
141. "新型インフル、奈良と大阪で８０代の計２人死亡". The Asahi Shimbun. October 26, 2009. Archived from the original on October 30, 2009. Retrieved 2009-11-03.
142. "石巻の５７歳男性死亡". The Yomiuri Shimbun. 2009-10-29. Retrieved 2009-11-03.
143. "タミフル耐性を確認県内で初". The Asahi Shimbun. 2009-10-29. Retrieved 2009-11-03.
144. "新型インフル：東京の６３歳女性が死亡全国で３７人目". THE MAINICHI NEWSPAPERS. 2009-10-29. Archived from the original on November 3, 2009. Retrieved 2009-11-03.
145. "新型インフル感染の２０歳代男性死亡...熊本". The Yomiuri Shimbun. October 30, 2009. Archived from the original on November 2, 2009. Retrieved 2009-11-03.
146. "【新型インフル】大阪府で２人死亡１人は基礎疾患ない成人男性". The Sankei Shimbun. October 30, 2009. Archived from the original on November 2, 2009. Retrieved 2009-11-03.
147. "大阪で２人死亡新型インフル、全国で死亡４０例に". The Asahi Shimbun. October 31, 2009. Archived from the original on November 2, 2009. Retrieved 2009-11-03.
148. "京都市の３０代女性新型インフルで死亡". Kyoto Shimbun. 2009-11-01. Retrieved 2009-11-03.
149. "新型インフル２歳児死亡". The Asahi Shimbun. 2009-11-02. Retrieved 2009-11-03.
150. "The Japan Times - News on Japan, Business News, Opinion, Sports, Entertainment and More". The Japan Times. Retrieved March 26, 2015.

Footnotes

1. Although Narita Airport is in Chiba prefecture, the case found at quarantine is included as a Japanese domestic case, but not considered as a patient of Chiba.

External links

• ペーパータオルでマスク作りを Katakai Clinic
• National count of novel H1N1 cases, updated frequently, if not daily