We must actively prevent and treat infectious diseases.
Tips
usage
防治 combines prevention (防) and treatment (治) into one concept. It's commonly used in medical and environmental contexts. 防治结合 (prevention and treatment combined) is a key principle of Chinese public health.
usage
预防 = to prevent. 治疗 = to treat/cure. 防治 bridges both concepts. 防 alone = to guard against. 治 alone = to govern or cure.