title: Echinococcus granulosus genotypes circulating in alpacas (Lama pacos) and pigs (Sus scrofa) from an endemic region in Peru.
abstract: The identification of the genotypes of Echinococcus granulosus present in livestock and wild animals within regions endemic for cystic echinococcosis (CE) is epidemiologically important. Individual strains display different biological characteristics that contribute to outbreaks of CE and that must be taken into account in the design of intervention programs. In this study, samples of hydatid cysts due to E. granulosus were collected from alpacas (4) in Puno and pigs (8) in Ayacucho in Peru, an endemic region for CE. Polymerase chain reaction amplification and DNA sequencing of specific regions of the mitochondrial cytochrome C oxidase subunit 1 and NADH dehydrogenase subunit 1 genes confirmed the presence of a strain common to sheep, the G1 genotype, in alpacas. Two different strains of E. granulosus were identified in pigs: the G1 and the G7 genotypes. This is the first report of the G1 genotype of E. granulosus in alpacas in endemic regions of CE in Peru.
authors.affiliation: Laboratório de Zoonosis Parasitaria, Instituto Nacional de Salud, Lima, Peru. betesanchez@hotmail.com
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Sánchez
authors.forename: Omar
authors.initials: O
authors.lastname: Cáceres
authors.forename: César
authors.initials: C
authors.lastname: Náquira
authors.forename: Eduardo
authors.initials: E
authors.lastname: Miranda
authors.forename: Franklyn
authors.initials: F
authors.lastname: Samudio
authors.forename: Octavio
authors.initials: O
authors.lastname: Fernandes
mesh_terms: D000818:Animals; D002161:Camelids, New World / Q000469:parasitology*; D018509:DNA, Helminth / Q000235:genetics; D004272:DNA, Mitochondrial; D004443:Echinococcosis / Q000469:parasitology / Q000662:veterinary*; D048209:Echinococcus granulosus / Q000235:genetics* / Q000302:isolation & purification; D019353:Endemic Diseases / Q000662:veterinary; D005838:Genotype; D010568:Peru / Q000453:epidemiology; D010802:Phylogeny; D034421:Sus scrofa / Q000469:parasitology*
chemical_list: D018509:DNA, Helminth; D004272:DNA, Mitochondrial