| crimean-congo hemorrhagic fever in iran. | the presence of crimean-congo hemorrhagic fever virus (cchfv) in iran was first identified in studies of livestock sera and ticks in the 1970s, but the first human infection was not diagnosed until 1999. since that time, the number of cases of cchf in iran has markedly increased. through january 2012, articles in the published literature have reported a total of 870 confirmed cases, with 126 deaths, for a case fatality rate (cfr) of 17.6%. the disease has been seen in 26 of the country's 31 prov ... | 2013 | 23872313 |