Emerg Infect Dis. 2013 Oct;19(10):1635-8. doi: 10.3201/eid1910.130609.
Influenza A viruses are a threat to poultry and human health. We investigated evolution of influenza A virus H7 and N9 subtypes in wild and domestic birds. Influenza A(H7N9) virus probably emerged after a long silent circulation in live poultry markets in eastern Asia.
甲型流感病毒对禽类和人类健康构成威胁。我们研究了野生和家养鸟类中甲型流感病毒 H7 和 N9 亚型的进化情况。甲型 H7N9 病毒可能是在东亚活禽市场长期沉默传播后出现的。