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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Evidence for Circulation of the Rift Valley Fever Virus among Livestock in the Union of Comoros
PLoS Neglected Tropical Diseases, Volume 8, No. 7, Article e3045, Year 2014
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Description
Rift Valley fever virus (RVFV) is an arthropod-borne phlebovirus reported to be circulating in most parts of Africa. Since 2009, RVFV has been suspected of continuously circulating in the Union of Comoros. To estimate the incidence of RVFV antibody acquisition in the Comorian ruminant population, 191 young goats and cattle were selected in six distinct zones and sampled periodically from April 2010 to August 2011. We found an estimated incidence of RVFV antibody acquisition of 17.5% (95% confidence interval (CI): [8.9-26.1]) with a significant difference between islands (8.2% in Grande Comore, 72.3% in Moheli and 5.8% in Anjouan). Simultaneously, a longitudinal entomological survey was conducted and ruminant trade-related information was collected. No RVFV RNA was detected out of the 1,568 blood-sucking caught insects, including three potential vectors of RVFV mosquito species. Our trade survey suggests that there is a continuous flow of live animals from eastern Africa to the Union of Comoros and movements of ruminants between the three Comoro islands. Finally, a cross-sectional study was performed in August 2011 at the end of the follow-up. We found an estimated RVFV antibody prevalence of 19.3% (95% CI: [15.6%-23.0%]). Our findings suggest a complex RVFV epidemiological cycle in the Union of Comoros with probable inter-islands differences in RVFV circulation patterns. Moheli, and potentially Anjouan, appear to be acting as endemic reservoir of infection whereas RVFV persistence in Grande Comore could be correlated with trade in live animals with the eastern coast of Africa. More data are needed to estimate the real impact of the disease on human health and on the national economy. © 2014 Roger et al.
Authors & Co-Authors
Roger, Matthieu
France, Paris
Cirad
France, Paris
Inrae
France, Sainte Clotilde, Ile de la Réunion
Plateforme de Recherche Cyroi
Béral, Marina
France, Paris
Cirad
France, Paris
Inrae
France, Sainte Clotilde, Ile de la Réunion
Plateforme de Recherche Cyroi
Licciardi, Séverine
France, Sainte Clotilde, Ile de la Réunion
Plateforme de Recherche Cyroi
Soulé, Miradje
Comoros, Moroni
Vice-présidence en Charge de L’agriculture
Faharoudine, Abdourahime
Comoros, Moroni
Vice-présidence en Charge de L’agriculture
Foray, Coralie
France, Paris
Cirad
France, Paris
Inrae
France, Sainte Clotilde, Ile de la Réunion
Plateforme de Recherche Cyroi
Olive, Marie Marie
France, Paris
Cirad
France, Paris
Inrae
France, Sainte Clotilde, Ile de la Réunion
Plateforme de Recherche Cyroi
Madagascar, Antananarivo
Institut Pasteur de Madagascar
Maquart, Marianne
France, Paris
Cirad
France, Paris
Inrae
France, Sainte Clotilde, Ile de la Réunion
Plateforme de Recherche Cyroi
Soulaimane, Abdouroihamane
Comoros, Moroni
Vice-présidence en Charge de L’agriculture
Madi Kassim, Ahmed
Comoros, Moroni
Vice-présidence en Charge de L’agriculture
Cêtre-Sossah, Catherine Béatrice
France, Paris
Cirad
France, Paris
Inrae
France, Sainte Clotilde, Ile de la Réunion
Plateforme de Recherche Cyroi
Cardinale, Éric
France, Paris
Cirad
France, Paris
Inrae
France, Sainte Clotilde, Ile de la Réunion
Plateforme de Recherche Cyroi
Statistics
Citations: 28
Authors: 12
Affiliations: 5
Identifiers
Doi:
10.1371/journal.pntd.0003045
ISSN:
19352727
e-ISSN:
19352735
Research Areas
Infectious Diseases
Study Design
Cross Sectional Study
Cohort Study
Study Approach
Quantitative
Study Locations
Comoros