打流感疫苗有用嗎@ 灣區生活萬花筒:: 痞客邦PIXNET :: 但是大部分人打過的疫苗都是前年的, 去年二月才公佈2012-2013年的疫苗還沒出廠 , 所以即使打過疫苗的人還是會被傳染, 就會覺得打流感疫苗好像沒用. 灣區這裡 ...
CDC - What You Should Know for the 2012-2013 Influenza Season ... These results indicate that vaccination with the 2012-2013 flu season vaccine reduced the risk of flu-associated medical visits from flu A (H3N2) viruses by one ...
