关于卡介苗芽孢杆菌（BCG）疫苗
BCG is a vaccine made specifically for tuberculous. It has only marginal effectiveness for preventing tuberculosis.
Many countries do not use this vaccine because of its limited effectiveness in control programs when TB is uncommon in the population.
In countries where TB is common and relatively uncontrolled, the BCG vaccine is part of their TB control programs. Infants are targeted for vaccination since this vaccine does have some protective effect for children who are frequently exposed.
时间表
One injection
副作用
卡介苗疫苗的副作用非常罕见。 BCG疫苗不应给予免疫抑制的人，例如感染HIV的人，器官移植受者或孕妇。
