Inhibition of Crimean-Congo Hemorrhagic Fever Viral Infectivity Yields in Vitro by Ribavirin
ARMY MEDICAL RESEARCH INST OF INFECTIOUS DISEASES FORT DETRICK MD
Pagination or Media Count:
Ribavirin was evaluated as a potential therapeutic for Crimean-Congo hemorrhagic fever CCHF. Viral yields for strains of CCHF virus from Europe, Asia, and African in African green monkey kidney Vero cells were markedly reduced by this drug. Some CCHF viral strains appeared more sensitive than others, but in general, ribavirin doses as low as 5 ugml caused a transient reduction of viral yields. A further reduction in viral yields was induced by a dose of 25 ugml, and evidence of viral replication was not demonstrated in cells treated with 50 or 250 ugml. In contrast, a dose of ribavirin at least 9 times greater was required to induce a comparable inhibitory effect on the yields of Rift Valley fever virus, for which the drug has been shown to inhibit replication in monkeys and rodents. Keywords Reprints Therapy.