Virus Research Laboratory, University of Ibadan, Vector-Borne Diseases Division, Bureau of Laboratories, Centers for Disease Control, Public Health Service, U.S. Department of Health and Human Services, Naval Medical Research Unit No. 2, Jakarta Detachment, Ibadan, Nigeria
Laboratory-acquired infections encountered between 1963 and 1977 among personnel of the Virus Research Laboratory, Ibadan, Nigeria, are reported. Two cases of chikungunya infection occurred and one each with Dugbe, Wesselsbron, and dengue viruses. In each case, virus was isolated or development of antibody demonstrated. Among 22 staff members who were monitored during this interval, three seroconverted to Orungo virus and two each to chikungunya and Rift Valley fever viruses, without experiencing any clinically recognized disease.