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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
immunology and microbiology
Urban yellow fever epidemic in western nigeria, 1987
Transactions of the Royal Society of Tropical Medicine and Hygiene, Volume 83, No. 3, Year 1989
Notification
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Description
A large epidemic of urban yellow fever occurred in April and May 1987 in Oyo State, western Nigeria. The principal vector was Aedes aegypti, breeding in domestic water containers. The 1987 outbreak followed an epidemic of sylvatic yellow fever in eastern Nigeria the previous year, and probably resulted from introduction of the virus by viraemic travellers. The outbreak in Oyo State ended in early July, by which time 805 cases and 416 deaths had been officially notified. However, surveys of 3 villages in the epicentre, a region with over 4 million inhabitants, indicated an infection rate of approximately 20%, a clinical attack rate of 2'9% and a mortality rate of 0-6%, suggesting that the true incidence of cases and deaths far exceeded the official reports. Yellow fever virus was isolated from persons with fully developed yellow fever as well as mild febrile illness. One virus isolate was made from blood of an individual with mild illness, who had received 17D vaccine 5 d earlier; monoclonal antibody analysis showed that the isolate was a wild-type virus. Larval indices of Ae. aegypti were very high; however, low vector competence of the Ae aegypti population may have provided a constraint on spread of the epidemic. In late 1987 a third epidemic appeared in Niger State, northern Nigeria, with 644 reported cases and 149 deaths. The vector(s) involved is (are) unknown. © Oxford University Press.
Authors & Co-Authors
Nasidi, Abdulsalami Salam
Nigeria
Federal Vaccine Production Laboratories
Monath, Thomas P.C.
United States, Atlanta
National Center for Emerging and Zoonotic Infectious Diseases
DeCock, Kevin M.
United States, Washington, D.c.
United States Department of Health and Human Services
Tomori, Oyewale
Nigeria, Ibadan
University College Hospital, Ibadan
Oialeye, O. D.
Nigeria, Ibadan
University College Hospital, Ibadan
Adeniyi, J. A.
Nigeria, Ibadan
University College Hospital, Ibadan
Cordellier, Roger
Nigeria
Centre Universitaire de Formation en Entomologie Médicale et Vétérinaire
Harry, Tekena O.
Nigeria, Maiduguri
University of Maiduguri
Sorungbe, A. O.O.
Nigeria, Lagos
Federal Ministry of Health
Ajose-Coker, A. O.
Nigeria, Lagos
University of Lagos
Van Der Laan, G.
Switzerland, Geneva
Medecins Sans Frontieres
Oyediran, Allen B.O.O.
Nigeria, Ibadan
University College Hospital, Ibadan
Statistics
Citations: 85
Authors: 12
Affiliations: 9
Identifiers
Doi:
10.1016/0035-9203(89)90518-X
ISSN:
00359203
e-ISSN:
18783503
Research Areas
Environmental
Infectious Diseases
Study Design
Cross Sectional Study
Cohort Study
Study Locations
Niger
Nigeria