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We describe the case of a 43-year-old human immunodeficiency virus–infected man receiving combined antiretroviral therapy and coinfected with Hymenolepis nana, Hymenolepis diminuta, and Giardia intestinalis, presenting as chronic diarrhea and critical weight loss. Immunological aspects of these interactions are reviewed.
Authors' addresses: Gladymar Pérez-Chacón, Leonor A. Pocaterra, Aurora Hernán, and Luz Núñez, Cátedra de Parasitología, Universidad Central de Venezuela Escuela de Medicina Jose Maria Vargas, Caracas, Venezuela, E-mails: gladymar@gmail.com, leopoca@gmail.com, aurorahrnn@hotmail.com, and nenagold@gmail.com. Elsy Rojas, Laboratorio de Parasitosis Intestinales, Universidad Central de Venezuela Escuela de Medicina “José María Vargas,” Caracas, Venezuela, E-mail: elsyrjs@hotmail.com. Juan Carlos Jiménez, Laboratorio de Bioquímica, Instituto de Inmunología, Facultad de Medicina de la Universidad Central de Venezuela, Caracas, Venezuela, E-mail: jcjimenez488@hotmail.com.