由于缺少天花病毒的循环,因此妊娠妇女不应暴露于含活牛痘病毒的天花疫苗。不可为妊娠妇女或准备在接种后4周内怀孕的妇女接种牛痘,因为接种可增加胎儿感染牛痘的危险,虽然机会很小,但危害很大。另外建议与孕妇密切接触的人也不要接种。为防止妊娠妇女无意接种,筛选妇女妊娠情 Pregnant women should not be exposed to smallpox vaccines containing live vaccinia virus due to a lack of a circulating variola virus. Vaccination of vaccinia should not be given to pregnant women or to women who are pregnant within 4 weeks after vaccination because vaccination increases the risk of fetal infection of vaccinia, although the chances are small but harmful. Also recommended that close contact with pregnant women are not vaccinated. In order to prevent unintentional inoculation of pregnant women, screening women’s pregnancy