Brucellosis in patients with Crimean-Congo hemorrhagic fever

Background: crimean-congo hemorrhagic fever (cchf) is a fatal zoonotic viral disease caused by infection with a tick-borne virus of the genus nairovirus. in this study,we investigated the incidence of brucellosis in patients diag-nosed with cchf. methods: overall,169 patients hospitalized with an initial diagnosis of cchf were included in 2011 in tokat/ turkey. immunoglobulin m (igm) antibodies and/or pcr results were used in the laboratory diagnosis of cchf,while plate and standard tube agglutination (sta) tests were used to diagnose brucellosis. results: overall,120 patients (79%) with positive pcr tests were diagnosed with cchf. five (4.16%) were also diagnosed with brucellosis based on the positive plate and sta test results. four patients (2.36%) had negative cchf pcr and positive sta test results. conclusion: brucellosis and cchf can mimic each other and that all patients with cchf or brucellosis should be screened for both conditions.