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(詳細はbirds is considered a significant pandemic threat. While prior H5N1 strains have been known, they were significantly different from the current H5N1 strain on a genetic level, making the global spread of this new strain unprecedented. The current H5N1 strain is a fast-mutating, highly pathogenic avian influenza virus (HPAI) found in multiple bird species. It is both epizootic (an epidemic in non-humans) and panzootic (a disease affecting animals of many species especially over a wide area). Unless otherwise indicated, "H5N1" in this article refers to the recent highly pathogenic strain of H5N1. In January, Japan, Hungary, Russia, and the United Kingdom joined the list of nations seeing a resurgence of bird deaths due to H5N1. In February, Pakistan, Turkey, Afghanistan, and Myanmar joined the list and Kuwait saw its first major outbreak of H5N1 avian influenza. In March, Bangladesh and Saudi Arabia each saw their first major outbreak of H5N1 avian influenza and Ghana in May. As H5N1 continued killing many birds and a few people throughout the spring in countries where it is now endemic, in June Malaysia and Germany saw a resurgence of bird deaths due to H5N1, while the Czech Republic and Togo experienced their first major outbreak of H5N1 avian influenza. In July, France and India also saw a resurgence of bird deaths due to H5N1. ==January== *January 11, 2007: "South Korean officials say the bird flu virus had been transmitted to a human during a recent outbreak among poultry, but the person showed no symptoms of disease." 〔(CBS News: Bird flu soars )〕 *January 11, 2007: "Bird flu reaches another province in southern Vietnam, spreading to flocks in two new areas in as many days. Some 20 unvaccinated chicks died suddenly over the weekend at a farm in Vinh Long province, and test results came back positive for the lethal H5N1 strain." 〔 *January 12, 2007: "In Nigeria, a new outbreak of the H5N1 virus is reported in birds in Sokoto and Katsina states." 〔 *January 14, 2007: "Japanese agricultural officials confirmed yesterday that the virulent H5N1 bird flu virus caused the deaths of thousands of chickens at a poultry farm in southern Japan this week () Japan's most recent () outbreak occurred in Kyoto in 2004.".〔 (Officials confirm H5N1 virus at Japanese farm ) - Taipei Times, January 14, 2007〕 *January 16, 2007: "A new outbreak of virulent bird flu is confirmed in ducks in northern Thailand -- the first such case in six months. About 100 ducks were reported dead and tested in Phitsanulok province. Wild and free-range ducks within a 3-miles radius are being culled as a precaution." 〔 *January 17, 2007: Indonesia Works to Stem Bird Flu Cases - Indonesia plans to slaughter hundreds of thousands of backyard chickens over the next few weeks in a bid to stem a surge in human deaths from the H5N1 virus. Indonesia has recorded 61 deaths from bird flu, including four in the last week.〔(Indonesia Works to Stem Bird Flu Cases ) - The Associated Press, January 17, 2007〕 *January 18, 2007: "Mutations in the bird flu virus have been found in two infected people in Egypt, in a form that might be resistant to the medication most commonly used to treat the deadly disease, the WHO said. The mutations in the H5N1 virus strain were not drastic enough to make the virus infectious enough to spark a pandemic, but officials said more such mutations could prompt scientists to rethink current treatment strategies." 〔 *January 20, 2007: "South Korea prepares to slaughter 273,000 poultry after an H5N1 outbreak at a chicken farm." 〔 *January 25, 2007: "The European Commission has confirmed the presence of H5N1 in a farm in the southeastern Hungary."〔(FOCUS News Agency ) article ''Bird flu approaching Romanian border'' published January 25, 2007〕 *January 29, 2007:There was an outbreak of H5N1 at three farms or households in the Krasnodar territory, an agricultural region in the southern part of European Russia on the Black Sea, Russian officials said on January 29, 2007.〔(Kyiv Post ) article ''Russia registers first bird flu outbreak of 2007'' published January 29, 2007〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Global spread of H5N1 in 2007」の詳細全文を読む スポンサード リンク
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