关于流感病毒毒性评估

Virulence Assessment on Novel A/H1N1 Influenza Virus

病毒在人群中的流行速度或病毒在人群传播过程中所显示的毒力主要反应出人群的遗传异质性。当一个病毒性疾病在不同亚群之间的发病率和死亡率不表现出明显差异时,该病毒的毒力可能十分强大。相反,当这些差异存在时,则其毒力较低;差异种类越多,差异程度越大,则毒力越小。

The virulence of a virus, perceived by the speading speed of the virus within a population, reflects the population＇ s genetic heterogeneity. When the difference of morbidity and mortality of a virus - caused disease within various ethnic groups is trivial, the virulence of the virus may be very powerful. In contrast, when the difference is significant, the virulence is quite low. The greater the difference between the ethnic groups, the lower the virulence.