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据说是由世界上几个专门的研究机构预测的。我的家庭医生说,每年流行的感冒病毒都不同,有人专门进行此项研究,预测明年的病毒趋势。所以,每年的疫苗都只能用到夏天,而新疫苗要到九或十月才能出来。

rollor (Rollor)
(#343604@0)
2002-1-22 -04:00
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Back To Topic: 各位DX,孩子打完流感疫苗的2个月里竟然发了3次烧,这究竟是怎么回事啊?(原来很少有病的)

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