Abstract
Pulmonary diseases associated with parasitic infections of the lung are rare. Tropical pulmonary eosinophilia, caused by the larial nematodes Wuchereria bancrofti and Brugia malayi, is endemic in the tropical and subtropical areas of Asia and Africa. The pathogenesis is due to an exaggerated immune response to the larial antigens which includes type I, type III and type IV reactions with eosinophils playing an important role. The disease affects less than 1% of patients with lymphatic lariasis, mainly young adult males. It has an onset of several months with respiratory symptoms mainly fever, cough, dyspnea and wheeze. In India, it is mostly found around the coastal regions from Kerala and West Bengal to Tamil Nadu.
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