Effects of Air Pollution on Respiratory Tract Microecosystem

ObjectiveTo approach the effects of air pollution on respiratory tract flora in order to provide scientific basis for improving existent environment and preventing diseases.MethodsChildren aged 6～8 years from severe and mild pollution areas without occupational exposure and administering antibiotics in the latest three months were selected and determined qualitatively for their oral-pharynx flora.ResultsOral-pharynx flora were greatly affected by external environment.The density of children's oralpharyngeus flora was markedly higher in the severe area than that in the mild one(P<0.01).The ratio of aerobes and anaerobes was obviously increased(P<0.01),and the detecting rate of pneumoocci was higher,However it was lower in α-streptococci (P<0.05).ConclusionAir pollution markedly influenced the field planting of flora in respiratory tract.It was an imponant factor for imbalance of microecosystem and the increasing incidence of reapiratory diseases.