The current vaccine prevents severe TB in infants, but not the most prevalent pulmonary TB in all age groups. The microscopic test gives false results in nearly half of all cases.
毫不奇怪，这些工具的效力已有所减弱。目前的疫苗可以防止婴儿患上严重肺结核，但对于所有年龄群体最常见的肺结核并无作用。显微镜观测的出错率也有近一半。