Flu vaccine during pregnancy protects infants from
标签： Tdap/DTaP 疫苗
疫苗仍然很受美国人的欢迎
Vaccines are still very popular with Americans 作者
美国入学疫苗接种率下降，豁免率上升
US school-entry vaccine rates fall, exemptions ris
成人疫苗可显著降低患痴呆症的风险
Adult vaccines significantly reduce the risk of de