Mosquito Survey Identifies Reservoir Of Disease
Over 450,000 mosquitoes from 11 sites across Kenya were screened by researchers from the United States Army Medical Research Unit,- Kenya (part of the Walter Reed Army Institute of Research), Kenya Medical Research Institute, and the International Centre for Insect Physiology and Ecology in Nairobi. 83 different viruses were identified, including alphaviruses, flaviviruses and orthobunyaviruses.
Mosquitoes were infected with West Nile, Ndumu, Sindbis, Bunyamwera, Pongola and Usutu virus at many test sites which represented diverse ecological locations. These viruses pose a significant public health problem especially in East Africa. West Nile virus has been a source of concern, not only in East Africa but around the world with outbreaks recently in the US and across Europe. Ngari virus, which was associated with hemorrhagic fever in northern Kenya in the late 1990s was isolated from two sites in Kenya.
Previously unknown viruses were also found: one with similarities to the newly discovered Chaoyang virus in China, and two more related to Quang Binh virus.
From the location of infected mosquitoes it seems that livestock as well as mosquitoes could be a reservoir of disease. Caroline Ochieng who led the study explained, "The importance of mosquitoes in the spread of arboviral diseases in East Africa cannot be over-emphasized. They have caused outbreaks afflicting both human and livestock with devastating public health and economic consequences. Implementation of mosquito and arbovirus surveillance is therefore vital as part of an early warning system and rapid response plan."
Commenting on the potential impact of this study Linfa Wang, Editor-in-Chief of Virology Journal said, "This important study highlights the need for on-going surveillance in animals and insect vectors, in order to prepare for potential virus outbreaks in humans."
“Mosquito-borne arbovirus surveillance at selected sites in diverse ecological zones of Kenya; 2007 – 2012”,
Caroline Ochieng, Joel Lutomiah, Albina Makio, Hellen Koka, Edith Chepkorir, Santos Yalwala, James Mutisya, Lillian Musila, Samoel Khamadi, Jason Richardson, Joshua Bast, David Schnabel, Eyako Wurapa and Rosemary Sang.
Virology Journal 2013 10:140, doi:10.1186/1743-422X-10-140
Please use one of the following formats to cite this article in your essay, paper or report:
Journal, Virology. "Mosquito Survey Identifies Reservoir Of Disease." Medical News Today. MediLexicon, Intl., 10 May. 2013. Web.
31 May. 2016. <http://www.medicalnewstoday.com/releases/260322.php>
Journal, V. (2013, May 10). "Mosquito Survey Identifies Reservoir Of Disease." Medical News Today. Retrieved from
Please note: If no author information is provided, the source is cited instead.
Contact our news editors
For any corrections of factual information, or to contact our editorial team, please see our contact page.
Copyright Medical News Today: Excluding email/sharing services explicitly offered on this website, material published on Medical News Today may not be reproduced, or distributed without the prior written permission of Medilexicon International Ltd. Please contact us for further details.