Climate change is having a huge impact on the spread of infectious diseases around the world. Mosquito-transmitted diseases like yellow fever, dengue, and malaria are shifting, causing more of a burden in endemic areas, but also arriving in new locations (for example, West Nile Virus is a problem in the USA, and dengue is becoming increasingly reported in Europe).

Here, I’ve written about the the Crimean-Congo haemorrhagic fever virus (CCHFV), which is transmitted by ticks. As befits the ‘haemorrhagic fever’ part of the name, it can be extremely serious, with a case fatality rate in previous outbreaks of between 10-40%. It’s defined by the WHO as a high risk pathogen with limited research taking place, and no anti-viral therapy or vaccine available.