Abstract
Epidemiological researches were conducted as to chronic bronchitis for 36, 374 cases general population over 40 years old living in 9 different air-polluted areas and as to asthma and asthmatic bronchitis of 39, 834 school children of 4 different air-polluted areas.
The following is a report, obtained after careful study on the result of above researches, concerning dose-response of the environmental air pollution to chronic bronchitis/asthma/asthmatic bronchitis, so as to clarify that the environmental air pollution has obvious influence upon occurrence of the above cases and causes aggravation and prolongation of healing time.
