Global influenza prevails or relates to La Nina Phenomenon big
Washington, January 17 (Xinhua) ' Reporter Ren HaiJun) It had caused a large amount of injuries and deaths in 1918, 1957, 1968 and 2009 that worldwide influenza is great to prevail. American researchers wrote articles to point out on the network edition of the American " journal of national academy of sciences " a few days ago, influenza is great may relate to La Nina Phenomenon to prevail.
In order to study the climate mode and great relation when prevail of influenza, Columbia University and researcher of Harvard University analyze 4 large to appear marine temperature record of will it be two quarters of autumn and winter of district such as Pacific Ocean such as the equator the previous year while being prevailing influenza. They find year the intersection of the equator and the intersection of sea water and the intersection of surface temperature and low the intersection of Yu Zheng and long-term copy in the Pacific area these. La Nina Phenomenon means the east of the Pacific Ocean of the equator and large range of sea water of middle part are unusually phenomenon which become cold continuously.
Researchers say, La Nina Phenomenon can change the main host of human influenza virus - -Migratory bird migration mode, influence their health while migrating to mix with the population, influence genetic exchange between each other, lead to the fact some dangerous new malicious one of influenza appear. In addition, La Nina Phenomenon also will cause migratory bird with pig wait for domestic animal keep in touch, large to prevail influenza one big reason get bird flu virus with the intersection of pig and influenza virus take place gene exchange 2009, poisonous one taking shape dangerously.
Global influenza prevails or relates to La Nina Phenomenon big
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