Hypersensitivity pneumonitis: a review on epidemiology / 中国实用内科杂志

Hypersensitivity pneumonitis(HP) is an interstitial lung disease associated with environmental exposure, which is related to individual susceptibility and environmental antigen exposures. Its clinical manifestations, severity and natural course are highly heterogeneous. This review on HP epidemiology includes the incidence and prevalence of HP, geographical distribution, gender differences and age characteristics, incidence data of smokers, antigens, clinical subtypes and mortality of HP.