Vaccines are still very popular with Americans 作者
标签： Tdap/DTaP 疫苗
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
Vaccines are still very popular with Americans 作者
US school-entry vaccine rates fall, exemptions ris
Adult vaccines significantly reduce the risk of de