And as I mentioned before, death would occur in 20-30 percent of the cases that got the most severe form of smallpox.

就像我刚说的,百分之二十到三十的,天花重症病人会死亡

耶鲁公开课 - 生物医学工程探索课程节选

If smallpox occurred in your community, about 30 percent of the people that acquire the disease would die from it; the other 70 percent could be disabled or permanently disfigured as a result of the disease.

如果你周围有人得了天花的话,那么百分之三十的天花病人,会因此死亡,剩下的百分之七十会成为残疾或永久毁容,这都是天花造成的

耶鲁公开课 - 生物医学工程探索课程节选