The BCGvaccine prevents severe forms of TB in children, such as TB meningitis.
卡介苗可在儿童中预防严重类型的结核，例如结核脑膜炎。
2
BCGvaccine is contraindicated in people with impaired immunity, and WHO does not recommend BCG vaccination for children with symptomatic HIV infection.
免疫功能受损者禁忌接种bcg，世卫组织也不推荐对已出现HIV感染症状的儿童接种BCG。
3
Q: Mycobacterium tuberculosis is becoming resistant to more and more drugs, cheap diagnosis leaves much to be desired, and the BCGvaccine has varying efficacy and is 80 years old.