卡介苗一定要在新生儿未感染结核菌之前接种，对已经感染者，卡介苗就失去了保护作用。我国有1/3人口感染了结核菌，新生儿出生后暴露在结核菌下的风险极大。所以，世界卫生组织要求结核病中、高流行的国家所有新生儿出生后尽快接种卡介苗。 而我国又是乙型肝炎高流行国家。为了预防乙型肝炎，新生儿出生...
BCG must before inoculation of infants infected with TB, have been infected, will lose the protective effect of bcg. Our country population is infected with Mycobacterium tuberculosis 1/3, after the birth of the great risk of exposure to tb. Therefore, WHO asked TB, in countries with a high prevalence of all neonatal BCG vaccination as soon as possible. China is a country with high prevalence of hepatitis B. Newborn born to prevent hepatitis b...
