| investigations into yellow fever virus and other arboviruses in the northern regions of kenya. | previous studies having shown an appreciable level of yellow fever immunity to exist in northern kenya, further epidemiological and serological surveys were carried out there in 1968 in an attempt to define more clearly the distribution of yellow fever and to locate possible vector and reservoir hosts of the disease; these surveys also provided information on a number of other arboviruses.altogether 436 sera from 5 areas in northern kenya were screened by haemagglutination-inhibition tests with ... | 1970 | 4393661 |
| laboratory vector competence experiments with yellow fever virus and five south african mosquito species including aedes aegypti. | three domestic and peridomestic mosquito species, selected because their prevalence, distribution and ecology favoured them as potential urban vectors of yellow fever (yf) in south africa, were submitted to numerous tests for infectivity [measured as dose needed to infect 50% of the mosquitoes (mid50)], mainly with a kenyan strain (bc7914) of the virus. use of a nigerian virus strain (tvp1617) did not significantly alter infectivity. after artificial infective blood meals with titres of 7.0-8.0 ... | 2002 | 12474475 |
| microhabitat partitioning of aedes simpsoni (diptera: culicidae). | yellow fever virus is a reemerging infection responsible for widespread, sporadic outbreaks across africa. although aedes aegypti (l.) is the most important vector globally, in east africa, epidemics may be vectored by aedes bromeliae (theobald), a member of the aedes simpsoni (theobald) species complex. the ae. simpsoni complex contains 10 subspecies, of which ae. bromeliae alone has been incriminated as a vector of yellow fever virus. however, morphological markers cannot distinguish ae. brome ... | 0 | 24897852 |
| genetic differentiation in the yellow fever virus vector, aedes simpsoni complex, in africa: sequence variation in the ribosomal dna internal transcribed spacers of anthropophilic and non-anthropophilic populations. | mosquitoes of the aedes simpsoni complex are important vectors of yellow fever virus in africa. we examined the ribosomal dna sequence divergence in the internal transcribed spacer regions (its-1 and its-2) for populations of mosquitoes that were determined to be anthropophilic or non-anthropophilic in their bloodmeal host preference. a neighbour-joining tree produced two clades: one contained all of the individual mosquitoes from anthropophilic populations and the other contained all of the ind ... | 2000 | 10672075 |