打预防针主要是预防某些病原微生物感染，只要孩子按时接种疫苗就能够预防疾病的产生，但是特殊情况下是不能打疫苗的，以免发生不良反应。[详细]
生活中，775sun.com：很多哮喘病人发现自己...[详细]
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