The prevalence of asthma appears to be inversely related to the incidence of typhoid and tuberculosis: hypothesis to explain the variation in asthma prevalence around the world.

摘要: Abstract The prevalence of asthma varies widely throughout the world. We now believe that is due to airway inflammation caused by an imbalance T-lymphocytes in airway. atopy drives a predominance Th 2 lymphocytes This paper links inversely tuberculosis and enteric infection. will argue reason we observe such marked variations around world fact developing there survival advantage fetal immune response mature from 1 lymphocyte predominant. A required combat infectious diseases as typhoid tuberculosis. Data World Health Organization confirms these two occur very rarely those communities where high. It may be clean infection-free environment Australia New Zealand responsible for region Oceania having dubious honor highest