When Zhangqi and Zhangbing are not defined as a single disease but a titleof a group of diseases including some regional diseases, the studies from those angles are lack of reliability.

• 由于所谓的瘴气与瘴病并非一种疾病,而是一组包含多种地方性疾病在内的复杂疾病的统称,因而这一研究便失去了可靠基础;