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自1979年风疹疫苗问世以来,已对418名孕妇进行了免疫接种。现在,已知390名(93%)孕妇的妊娠结果,其中343人为足月妊娠:接种时已知81人对风疹易感,262人
Since the advent of rubella vaccine in 1979, 418 pregnant women have been immunized. At present, the pregnancy outcome of 390 (93%) pregnant women is known, of whom 343 are term pregnancies: 81 were known to be susceptible to rubella at the time of vaccination and 262