Baylisascaris procyonis Infection in Elderly Person, British Columbia, Canada

摘要

To the Editor: Baylisascaris procyonis is an ascarid roundworm that commonly parasitizes the intestine of North American raccoons (1,2). As intermediate hosts, humans may develop visceral, ocular, and neural larva migrans (NLM) (1,3). Despite the high potential for exposure, only 20 cases of human cerebral B. procyonis infection have been reported, most causing devastating neurologic disease in young children (1,4–6). Here we expand the currently recognized spectrum of human disease by describing an unusual case of pathologically proven cerebral B. procyonis infection, which caused no apparent symptoms, in an elderly patient from British Columbia, Canada, with Alzheimer dementia