According to Hatton, improvements in sanitation and housing reduced infant mortality and childhood diseases.

根据 Hatton 的研究，清洁、住房上的改善降低了婴儿的死亡率和儿童疾病。

At that time, a terrible childhood disease was killing many kids.

当时，一种可怕的儿童疾病正在夺去许多孩子的生命。

As with childhood diseases, you can better resist those germs to which you have been exposed.

与儿童疾病一样，您可以更好地抵抗您接触过的那些细菌。

After a careful screening process, the scientists found 13 adults with mutations known to cause eight different debilitating -- and sometimes lethal -- childhood diseases.

经过仔细的筛选过程后，科学家们发现 13 名成年人的突变已知会导致八种不同的衰弱 - 有时是致命的 - 儿童疾病。