translation.en: There are 20 million people on the road at any time, in buses and trains, walking; 500,000 villages, 120 million households, and none of them wanted to report if they had a case of smallpox in their house, because they thought that smallpox was the visitation of a deity, Shitala Mata, the cooling mother, and it was wrong to bring strangers into your house when the deity was in the house. No incentive to report smallpox.
translation.zh: 那个年代的任意时刻，都会有两千万的人不是在汽车上 就是在火车上或在路上，我们走遍了50座村庄，走访了1.2亿户人家 但是没有人愿意跟我们说他们家有天花的个案 他们认为感染天花是因为有天神降临 那天神就是Shitala Mata, 降温女神 另外，把 陌生人带到屋子里也是不被接受的 因为神就在屋子里，所以没有人愿意报告天花的案例