The fifth and final year of research on the transmission ecology of tick-borne Crimean-Congo hemorrhagic fever (CCHF) virus in the West African savannah was devoted to integration and analysis of results, and continued surveillance at field sites. These observations of tick and virus activity in northern Senegal produced numerous new isolates of CCHF virus, principally from adult Hyalomma rufipes and H. truncatum; tick abundance at the prospective study sites remained ...
Progress continued during the fourth year of studies on the ecology of tick-borne Crimean-Congo hemorrhagic fever (CCHF) virus in the West African savannah. Prospective observations of tick and virus activity were maintained in northern Senegal to describe the seasonal activity of vector ticks. Adult tick abundance was low relative to previous years; seroconversion of sheep was correspondingly diminished. Immature ticks on small mammals and birds were most abundant during and ...
Further progress is reported for the third year of a project to study the transmission ecology of tick borne Crimean Congo Hemorrhagic Fever (CCHF) virus in the West African savannah. Prospective observations in northern Senegal were continued to describe the seasonal activity of potential vector ticks. Adult tick abundance was low relative to previous years and immature ticks feeding on small mammals and birds were most abundant during or after ...
Further progress is reported for the second year of a project to investigate the transmission ecology of tick-borne Crimean-Congo Hemorrhagic Fever virus (CCHFV) in the West African savannah. Long-term, prospective observations were continued at 3 sites in northern Senegal; other studies of virus transmission were performed in Mauritania. Adult tick activity on domestic ungulates appears seasonal for the major Rhipacephalus spp., but equivocal for Hyalomma spp. Immature ticks feeding on ...
Initial progress is reported for year 1 of a 3-year project to investigate the transmission ecology of tick-borne Crimean-Congo Hemorrhagic Fever virus (CCHFV) in the West African savannah. Long-term, prospective observations were begun a 3 sites in northern Senegal; other studies of virus and tick prevalence include Mauritania and The Gambia. Vertebrates and ticks were catalogued and components of their ecology described. At least 8 Ixodid tick species were identified ...
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