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Early Chinese texts contain extensive disease descriptions, including various texts that contain descriptions of modern-day conditions. During the Sui Dynasty, a leading scholar, Chao Yuanfang, may have authored a leading treatise 1400 years ago. Although these texts are the subject of ongoing research, evidence suggests that a clinical syndrome consistent with pertussis was observed in ancient China.

Chao Yuanfang: Imperial Physician of the Sui Dynasty and an Early Pertussis Observer?