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In the 18th century, infectious diseases led to huge numbers of deaths, including those from cholera, tuberculosis, diphtheria, measles, smallpox and typhoid, he said.
在18世纪，感染性疾病引发了大量的人口死亡，这些疾病包括霍乱、肺结核、白喉、麻疹、天花和伤寒。
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