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Volume 12, Number 12—December 2006

Dispatch

West Nile Virus in Horses, sub-Saharan Africa

Olivier Cabre*Comments to Author , Marc Grandadam†, Jean-Lou Marié‡, Patrick Gravier†, Aurélie Prangé†, Yan Santinelli§, Vincent Rous¶, Olivier Bourry#, Jean-Paul Durand†, Hugues J. Tolou†, and Bernard Davoust**
Author affiliations: *École du Val-de-Grâce, Paris, France; †Institut de Médecine Tropicale du Service de Santé des Armées, Marseille, France; ‡Secteur Vétérinaire de Marseille, Marseille, France; §Service Vétérinaire du Régiment de Cavalerie de la Garde Républicaine, Paris, France; ¶Secteur Vétérinaire de Lyon, Lyon, France; #Centre International de Recherches Médicales, Franceville, Gabon; **Direction Régionale du Service de Santé des Armées de Toulon, Toulon, France

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Table 1

West Nile virus antibody prevalence in horses in 6 African countries, December 2002–August 2005*

Country (sampling sites) Sampling date
(no. riding stables) No. tested No. IgG+† No. confirmed
IgG+‡ % Seroprevalence
Senegal (Dakar) Dec 2002, Apr 2003 (1) 25 23 23 92
Côte d'Ivoire (Abidjan) Dec 2003, Dec 2004, Jan 2005 (3) 95 51 27 28
Chad (N'Djamena) Nov 2003, Oct 2004 (2) 30 29 29 97
DRC (Kinshasa) Jul 2004 (1) 20 9 6 30
Gabon (Libreville, Port Gentil, Moanda) Dec 2004 (4) 64 9 2 3
Djibouti (Djibouti) Jul 2004, Aug 2005 (2) 11 2 1 9
Total 245 123 88 36

*IgG+, positive for immunoglobulin G; DRC, Democratic Republic of the Congo.
†By ELISA.
‡By Western blot and seroneutralization for samples from 2002–2003, by Western blot only for samples from 2004 to 2005.

*IgG+, positive for immunoglobulin G; DRC, Democratic Republic of the Congo.
†By ELISA.
‡By Western blot and seroneutralization for samples from 2002–2003, by Western blot only for samples from 2004 to 2005.

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