Journal of
Public Health and Epidemiology

  • Abbreviation: J. Public Health Epidemiol.
  • Language: English
  • ISSN: 2141-2316
  • DOI: 10.5897/JPHE
  • Start Year: 2009
  • Published Articles: 569

Full Length Research Paper

Yellow fever outbreak in central part of Senegal 2002: Epidemiological findings

M. Diallo1#, A. Tall1#*, I. Dia1, Y. Ba1, F. D. Sarr1, A. B. Ly1, J. Faye1, A. Badiane1, G. Diakhaby1, P. C. Faye2, R. Michel1, B. Diatta3, P. Nabeth1,4, L. Marrama1 and A. A. Sall1
1Dakar Pasteur Institute, BP 220 Dakar, Senegal 2MOH, Fann Résidence, Rue Aimé Césaire BP 4024, Senegal. 3Hôpital Principal De Dakar, BP 3006 Dakar, Senegal 4WHO, Lyon, 58 Avenue Debourg, Lyon 69007, France.
Email: [email protected]

  •  Accepted: 10 June 2013
  •  Published: 31 July 2013

Abstract

In 2002, a yellow fever (YF) outbreak occurred in the regions of Diourbel and Fatick, centre of Senegal. The index case was a young woman without any history of vaccination. Immunoglobulin M (IgM) specific of YF was detected in her blood by the Centre de Référence OMS sur la Recherche des Arbovirus et des Fièvres Hémorragiques (CRORA) in the Institut Pasteur of Dakar. According to specific case definitions, both active (investigation) and passive detection (surveillance) of human cases were performed and completed by entomological surveys. From September to December 2002, a total of 35 individuals recently infected by YF were identified out of 379 blood samples collected. During the investigation in October, 23 confirmed cases of YF were detected, including 11 deaths. All entomological indexes (Breteau, Container, House) were above the threshold of epidemic risk and 2 YF virus strains were isolated from Aedes furcifer collected in a village where YF cases and death were reported. Mass vaccination campaigns were urgently organized in all districts with positive cases to protect the populations.

 

Key words: Yellow fever, outbreak, mass vaccination, Senegal, West Africa, arbovirosis.