New myxomatosis variant emerges in wild hares in southern Zealand, Denmark

The first confirmed case of a new myxomatosis variant infecting wild hares has been detected in southern Zealand, raising concerns over local hare populations and the spread of the virus in Europe.

A new variant of myxomatosis has been detected in wild hares in southern Zealand, marking the first confirmed case of the virus type in Denmark, according to the pathology service at the University of Copenhagen.

Five hares from the Skælskør and Præstø areas tested positive in late August, and veterinarians said the animals showed pronounced swelling and pus around the eyes. The pathology service said the infection can be fatal and that local hare populations in affected areas are showing elevated mortality.

Myxomatosis has long been associated with severe disease in wild rabbits, but this variant is notable because it can also infect hares. The World Organisation for Animal Health says the virus spreads through blood-sucking insects as well as by direct contact and contaminated objects. The pathology service has therefore urged people not to handle sick or dead hares unless necessary.

The disease does not threaten human health, but it can be devastating for rabbits and hares. For domestic rabbits, vaccination remains the main preventive measure, and veterinarians are advising owners to maintain strict hygiene, including cleaning and disinfecting footwear and equipment after possible exposure.

The Danish finding has been verified in Germany. Similar outbreaks among hares have previously been reported in Spain, Portugal, Germany and the Netherlands. Maribo Dyrehospital recently warned of cases on Lolland and South Zealand and urged rabbit owners to watch for symptoms.