Crimean-Congo haemorrhagic fever (CCHF) is the most widespread tick-borne viral disease affecting humans. The causative agent, CCHF virus (a Nairovirus of the Bunyaviridae family) is transmitted mainly by ticks (Hyalomma) and livestock animals. Human-to-human transmission can occur, usually in the health care setting, resulting from close contact with the blood, secretions, organs or other bodily fluids of infected persons. The disease begins with a sudden onset of influenza-like symptoms which may progress to severe bleeding and can be fatal (current case fatality rate is 10-40%) if not treated.