| experimental studies on the replication and transmission of crimean-congo hemorrhagic fever virus in some african tick species. | seven african tick species were studied as potential vectors of crimean-congo hemorrhagic fever (cchf) virus. engorged nymphae of 4 ixodid species, hyalomma marginatum rufipes, h. truncatum, rhipicephalus evertsi mimeticus, and amblyomma hebraeum, were inoculated intracoelomically with cchf virus and assayed for virus content at varying times post-inoculation. the virus replicated in all 4 species, reaching maximum titers of 4.6-5.5(10) fluorescence focus units per ml on days 5-9 post-inoculatio ... | 1989 | 2494900 |
| crimean-congo hemorrhagic fever in south africa. | crimean-congo hemorrhagic fever virus was isolated for the first time in south africa in february 1981, from the blood of a 13-year-old boy who died in johannesburg after attending a camp in a nature reserve in the western transvaal. virus was isolated from 21/120 pools of questing ticks from the nature reserve, the infected species being hyalomma marginatum rufipes and h. truncatum. virus was also isolated from 4/38 pools of partially engorged ticks and other ectoparasites collected off hosts, ... | 1983 | 6418019 |
| viraemic transmission of crimean-congo haemorrhagic fever virus to ticks. | in order to determine the way in which vertebrates infected with crimean-congo haemorrhagic fever (cchf) virus and potential ixodid tick vectors interact in nature, immature and adult ticks of several species were fed on viraemic mammals and then assayed for virus content at varying times after feeding. cchf virus was not isolated from ticks of six species tested after feeding as adults and immature forms on sheep with viraemia of 10(2.5-3.2) ld 50/ml, nor from larval ticks fed on guinea-pigs an ... | 1991 | 1902186 |
| [experimental transmission of crimean-congo hemorrhagic fever virus by rhipicephalus evertsi evertsi (acarina:ixodidae)]. | we have conducted experiments to assess the ability of rhipicephalus evertsi evertsi tick to transmit the crimean-congo haemorrhagic fever (cchf) and determine their reproductive cycle. the rh. e. evertsi was infected by intracoelomic (transparietal and intra-anal) inoculation during the imaginal stases and by oral feeding on an infected viremic goat during imaginal and nymphal stases. the infection rate, transovarial and trans-stasial cchf virus transmission were monitored for virus reisolation ... | 1999 | 10472436 |