Eastern Europe has the highest level of infection, while in Western Europe, London has the highest TB rate of any capital city.
2
在英国,肺结核患病率的减少早于抗生素的发明,这是因为英国贫穷人口逐渐减少,生活环境日益改善。
Tuberculosis in England was in decline before the invention of antibiotics; this was because there were less poor people in England, and living conditions were better.
3
然后,依据PPD反应强度及活动性肺结核病人检出情况测算结核感染率及患病率。
Then, calculate tuberculosis infectious rate and morbidity according to PPD reaction intensity and finding of active tuberculosis patients.