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近年来,保加利亚的包虫病发病率有所上升,且大多数病例感染于儿童期。本文报导了其中的儿童肺包虫病(PE)的一些流行病
In recent years, the incidence of hydatid disease in Bulgaria has risen, and most cases have been infected in childhood. This article reports some of the epidemics of childhood pulmonary echinococcosis (PE)