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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
immunology and microbiology
Entomologic investigations of a chikungunya virus epidemic in the Union of the Comoros, 2005
American Journal of Tropical Medicine and Hygiene, Volume 78, No. 1, Year 2008
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Description
From January to April 2005, an epidemic of chikungunya virus (CHIKV) illness occurred in the Union of Comoros. Entomological studies were undertaken during the peak of the outbreak, from March 11 to March 31, aimed at identifying the primary vector(s) involved in transmission so that appropriate public health measures could be implemented. Adult mosquitoes were collected by backpack aspiration and human landing collection in homes and neighborhoods of clinically ill patients. Water-holding containers were inspected for presence of mosquito larvae. Adult mosquitoes were analyzed by RT-PCR and cultivation in cells for the presence of CHIK virus and/or nucleic acid. A total of 2,326 mosquitoes were collected and processed in 199 pools. The collection consisted of 62.8% Aedes aegypti, 25.5% Culex species, and 10.7% Aedes simpsoni complex, Eretmapodites spp and Anopheles spp. Seven mosquito pools were found to be positive for CHIKV RNA and 1 isolate was obtained. The single CHIKV mosquito isolate was from a pool of Aedes aegypti and the minimum infection rate (MIR) for this species was 4.0, suggesting that Ae. aegypti was the principal vector responsible for the outbreak. This was supported by high container (31.1%), household (68%), and Breteau (126) indices, with discarded tires (58.8%) and small cooking and water storage vessels (31.1%) registering the highest container indices. Copyright © 2008 by The American Society of Tropical Medicine and Hygiene.
Authors & Co-Authors
Sang, Rosemary C.
Kenya, Nairobi
Kenya Medical Research Institute
Ahmed, Ouledi
Comoros, Moroni
Ministere de la Sante Publique Moroni
Faye, Ousmane C.
Switzerland, Geneva
Organisation Mondiale de la Santé
Kelly, Cindy L.H.
United States, Atlanta
National Center for Emerging and Zoonotic Infectious Diseases
Yahaya, Ali Ahmed
Comoros, Moroni
Ministere de la Sante Publique Moroni
Mmadi, Ibrahim
Comoros, Moroni
Ministere de la Sante Publique Moroni
Toilibou, Ali
Comoros, Moroni
Ministere de la Sante Publique Moroni
Sergon, Kibet
Kenya, Kisumu
Centers for Disease Control and Prevention, Kenya
Brown, Jennifer
United States, Atlanta
National Center for Emerging and Zoonotic Infectious Diseases
Agata, Naphtali N.
Switzerland, Geneva
Organisation Mondiale de la Santé
Yakouide, Allarangar
Switzerland, Geneva
Organisation Mondiale de la Santé
Ball, Mamadou D.
Switzerland, Geneva
Organisation Mondiale de la Santé
Breiman, Robert F.
United States, Atlanta
Centers for Disease Control and Prevention
Miller, Barry R.
United States, Atlanta
National Center for Emerging and Zoonotic Infectious Diseases
Powers, Ann M.
United States, Atlanta
Centers for Disease Control and Prevention
United States, Atlanta
National Center for Emerging and Zoonotic Infectious Diseases
Statistics
Citations: 15
Authors: 15
Affiliations: 6
Identifiers
Doi:
10.4269/ajtmh.2008.78.77
ISSN:
00029637
Research Areas
Environmental
Health System And Policy
Study Locations
Comoros