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关于卡介苗接种的保护效果曾经有过激烈的讨论。最近印度南部卡介苗接种试验结果证明其无保护作用,重新引起了争论。一个需要回答的特殊问题是新生儿和幼婴接种卡介苗所产生保护作用的程度。
There has been a heated discussion about the protective effect of BCG vaccination. Recently, the result of the BCG vaccination test in southern India proved that it has no protective effect and reemerges controversy. A special question that needs to be answered is the extent of the protective effect of BCG vaccination in newborns and infants.