此外，八份观察研究中的四份表明个人注射流感疫苗对防止心脏病或心血管事件有效果。
In addition, four out of eight of these observational studies indicated there was a protective effect against heart attacks or cardiovascular events in individuals vaccinated against influenza.
2009年11月9日，位于俄罗斯远东的城市符拉迪沃斯托克，医生正在为给当地大学生注射流感疫苗做准备。
A medic prepares to give students of a university an injection of the H1N1 flu vaccine in Russia's far eastern city of Vladivostok on November 9, 2009.
注射流感疫苗含有灭活的流感病毒，批准用于年龄在6个月以上的包括健康和患有慢性疾病的人群使用。
The flu shot contains killed flu viruses. It's approved for people older than 6 months, including healthy people and people with chronic medical conditions.
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