Migratory birds bring dangerous ticks to Denmark

The first person in Denmark has been registered as bitten by a hunting tick – a carrier of Crimean-Congo haemorrhagic fever, which has a mortality rate of up to 50 percent. Warmer temperatures caused by climate change mean that the ticks, which previously died during the flight journeys of the migratory birds that carry them, increasingly survive and reach maturity in Denmark.

The Hyalomma marginatum, or hunting tick. Photo: European Centre for Disease Prevention and Control

The first person in Denmark has been registered as bitten by a Hyalomma tick – or ‘hunting tick’ – a carrier of the fatal Crimean-Congo haemorrhagic fever.The tick is borne on migratory birds which have always come to the Nordics. Due to warmer global temperatures caused by the burning of fossil fuels, however, the ticks […]


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