chuán / rǎn / bìng / xué / yán / jiū / chuán / rǎn / bìng / de / chuán / bō / guī / lǜ / hé / yù / fáng / fāng / fǎ

传染病学研究传染病的传播规律和预防方法。

Epidemiology studies how infectious diseases spread and how to prevent them.