流行性感冒的疫苗因為屬於自費型,要形成 #群體免
[https://www.facebook.com/hashtag/%E7%BE%A4%E9%AB%94%E5%85%8D%E7%96%AB?epa=HASHTAG]
疫
[https://www.facebook.com/hashtag/%E7%BE%A4%E9%AB%94%E5%85%8D%E7%96%AB?epa=HASHTAG]
#HerdImmunity [https://www.facebook.com/hashtag/herdimmunity?epa=