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During the years 1964 to 1970, 171 arboviruses of 15 different types were isolated from humans in Nigeria. Isolation rates were highest in 1969, and lowest in 1965 and 1967. Monthly arbovirus activity was highest in the rainy season months of June, July and August and lowest in the dry months of January and February. Viruses were isolated from all age(More)
Entomological investigations of the possible mosquito vectors of the yellow fever epidemic on the Jos Plateau, Nigeria, were carried out between 27 October and 15 November 1969.Of the 5 species of Aedes (Stegomyia) collected, Ae. luteocephalus was the most abundant in human-bait captures. Ae. aegypti, Ae. africanus, and Ae. vittatus were collected in low(More)
This article has attempted to describe the present status of efforts toward routine detection of breast cancer at a stage when it is readily curable and to point out, not only the potentials of screening programs, but also the problems and difficulties that beset them. We believe that efficient, safe screening and accurate early diagnosis are achievable and(More)
The acquisition and transmission of rickettsial pathogens by different tick developmental stages has important epidemiological implications. The purpose of this study was to determine if male Rhipicephalus sanguineus can experimentally acquire and transmit Ehrlichia canis in the absence of female ticks. Two trials were performed where nymphal and male R.(More)