Crimean-Congo Hemorrhagic Fever, Southwestern Bulgaria

摘要

To the Editor: Crimean-Congo hemorrhagic fever virus (CCHFV) causes a severe multisystem disease characterized by profuse bleeding with a case-fatality rate as high as 30%. The infection is endemic to the Bal-kans (1,2). In Bulgaria, most cases are reported from the central and eastern parts of the country (3,4). We report a cluster of cases observed in early spring 2008 in southwestern Bulgar-ia, an area considered at low risk for CCHF outbreaks