Studies on West Nile virus infection in Egypt
Journal of Infection and Public Health. 2010; 3 (2): 54-59
em Inglês
| IMEMR
| ID: emr-97941
ABSTRACT
We conducted a prospective cohort study to determine prevalence and incidence of West Nile virus [WNV] in Egypt. Cohorts were established in Upper [UE], Middle [ME], and Lower [LE] Egypt. Additionally, a cross-sectional serosurvey was performed in the North [NS] and South [SS] Sinai. Cohorts were bled initially and 1 year later. Sera were tested for WNV-IgG by ELISA and positive sera were confirmed by plaque reduction neutralization test [PRNT]. Sentinel chicken flocks placed in the above sites were bled monthly for virus isolation and serology. Mosquitoes were collected monthly from the above sites and tested for WNV. Human seroprevalence rates were 35%, 27%, 14%, 1% and 7% in UE, ME, LE, NS and SS, respectively. Seroconversion rates were 18%, 17% and 7% in UE, ME and LE, respectively; 49% of the seroconverters reported undiagnosed febrile illness. Sentinel chickens showed seroconversion in all study sites. WNV was isolated from both sentinel chickens and mosquitoes in cohort sites. This study demonstrates that WNV was actively circulating during the study period in different areas in Egypt and causing febrile illness in a considerable proportion of individuals in the study sites
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Índice:
IMEMR (Mediterrâneo Oriental)
Assunto principal:
Febre do Nilo Ocidental
/
Vírus do Nilo Ocidental
/
Estudos Transversais
/
Estudos Prospectivos
/
Inquéritos e Questionários
/
Estudos de Coortes
Tipo de estudo:
Estudo de incidência
/
Estudo de prevalência
Limite:
Humanos
Idioma:
Inglês
Revista:
J. Infection Public Health
Ano de publicação:
2010
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