country-wide seroprevalence studies on crimean-congo hemorrhagic fever and hantavirus infections in general population of bulgaria. | crimean-congo hemorrhagic fever (cchf) and hantavirus infections are the two viral hemorrhagic fevers spread in europe. to test actual circulation of cchf virus (cchfv) and hantaviruses in bulgaria, we conducted country-wide seroepidemiological studies. serum samples were collected prospectively from 1500 residents of all 28 districts in bulgaria. cchfv seroprevalence of 3.7% was revealed. anamnesis for tick bites, contact with livestock, age over 40 years and residency in haskovo district were ... | 2017 | 28561377 |