influenza virus vaccines

Since current seasonal influenza vaccines do not contain the pandemic virus, people should be vaccinated against both pandemic influenza and seasonal influenza.

由于当前的季节性流感疫苗不包含大流行性流感病毒，人们应针对大流行性流感和季节性流感两者接种疫苗。

Extensive studies and data analysis of influenza vaccines have only found a well established causal association with the 1976 vaccine that contained an H1N1 swine-influenza-like virus.

经由对流感病毒的进一步研究和数据分析，只发现在1976年含有类似于H1N1病毒的疫苗存在一例具有完整因果联系的案例。

We have also observed that new H5N1 avian influenza virus strains have recently emerged creating the possibility that vaccines currently in use may not be fully protecting poultry against the disease.

我们还注意到，最近出现了新的H5N1型禽流感毒株，有可能导致目前使用的疫苗无法充分保护禽类不受疾病的侵染。