Chikungunya virus outbreaks in Senegal in 1996 and 1997.

Citation
J. Thonnon et al., Chikungunya virus outbreaks in Senegal in 1996 and 1997., B S PATH EX, 92(2), 1999, pp. 79-82
Citations number
15
Categorie Soggetti
Envirnomentale Medicine & Public Health
Journal title
BULLETIN DE LA SOCIETE DE PATHOLOGIE EXOTIQUE
ISSN journal
00379085 → ACNP
Volume
92
Issue
2
Year of publication
1999
Pages
79 - 82
Database
ISI
SICI code
0037-9085(199905)92:2<79:CVOISI>2.0.ZU;2-G
Abstract
Chikungunya disease is generally recognized in Africa by serosurveys conduc ted in rural areas. Epidemics are rarely documented. We report two outbreak s in Senegal: one having occurred near Kaffrine in 1996 during an epidemic of yellow fever (YF), the second in Niakhar in 1997. Both diagnoses were co nducted by IgM antibodies captures and confirmed by virus isolations. In Kaffrine, a randomised study was carried out on 447 blood donors whose s erum was systematically tested for the most frequently encountered arboviru ses in Senegal. The incidence rate was higher for the unrecognized Chikungu nya infection (35,3%) than for the notified YF infection (21%). In Niakhar; Chikungunya infection was initially detected through three case s having occurred in health workers. A serosurvey was then conducted to def ine the area of prevalence. We report the clinical forms of Chikungunya virus infections the interest i ii detecting IgM for recent arbovirus infections and the duration of these IgM. The difficulties of diagnosis of Chikungunya infection in malaria ende mic areas are stressed The occurrence of arbovirus infections Yellow fever and Chikungunya viruses, transmitted by the same vectors (Aedes aegypti) in Kaffrine are also discussed.