甲型H1N1流感目前仍在多个国家蔓延,人们最为关心的问题之一是针对这一流感病毒的疫苗何时出现。世界卫生组织在其官方网站上针对疫苗的有关问题作出了解答:一、有没有一种针对甲型H1N1流感的有效疫苗?目前还没有,不过相关的疫苗研发正在进行之中。当某种流感病毒正在流行时,针对这一病毒的流感疫苗中通常都含有已被杀死(即灭活)或毒性减小的流 Influenza A (H1N1) is still spreading in many countries and one of the issues of greatest concern is when the vaccine against the flu virus will appear. WHO on its official website for vaccine-related issues to answer: First, there is no effective vaccine against the H1N1 influenza? There is no, but the relevant vaccine research and development is ongoing. When an influenza virus is prevalent, influenza vaccines against this virus usually contain a stream that has been killed (ie, inactivated) or reduced in toxicity