West Nile virus ecology in a tropical ecosystem in Guatemala.
Am J Trop Med Hyg
; 88(1): 116-26, 2013 Jan.
Article
em En
| MEDLINE
| ID: mdl-23149586
ABSTRACT
West Nile virus ecology has yet to be rigorously investigated in the Caribbean Basin. We identified a transmission focus in Puerto Barrios, Guatemala, and established systematic monitoring of avian abundance and infection, seroconversions in domestic poultry, and viral infections in mosquitoes. West Nile virus transmission was detected annually between May and October from 2005 to 2008. High temperature and low rainfall enhanced the probability of chicken seroconversions, which occurred in both urban and rural sites. West Nile virus was isolated from Culex quinquefasciatus and to a lesser extent, from Culex mollis/Culex inflictus, but not from the most abundant Culex mosquito, Culex nigripalpus. A calculation that combined avian abundance, seroprevalence, and vertebrate reservoir competence suggested that great-tailed grackle (Quiscalus mexicanus) is the major amplifying host in this ecosystem. West Nile virus transmission reached moderate levels in sentinel chickens during 2007, but less than that observed during outbreaks of human disease attributed to West Nile virus in the United States.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Clima Tropical
/
Vírus do Nilo Ocidental
/
Ecossistema
Limite:
Animals
/
Humans
País/Região como assunto:
America central
/
Guatemala
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article