| transstadial and horizontal transmission of rift valley fever virus in hyalomma truncatum. | we exposed hyalomma truncatum and rhipicephalus appendiculatus to rift valley fever (rvf) virus in order to assess the possible role of these ticks as enzootic/epizootic rvf vectors. the virus replicated in h. truncatum after intracoelomic inoculation, and a minimum transmission rate of 17% was achieved after 15 days intrinsic incubation. the virus persisted at least 58 days in these ticks. virus was also shown to pass transstadially from inoculated h. truncatum nymphs to adults, with peak viral ... | 1989 | 2802027 |