Methods To conduct The PPD test and examine the BCG inocualation ecar on the children from aged 3months to 15 years old. To take the chest X ray film on those with strongly prositive reaction of PPD test.

• 方法 出生满 3个月以上婴儿至 15周岁以下儿童作结核菌素试验 (PPD)及卡介苗接种的卡痕检查 ,PPD强阳性者进行胸部摄片检查 ,有症状者进行痰菌检查。