Usutu virus outbreak in Germany: Summer conditions fuel spread

The Usutu virus, which primarily affects birds, particularly blackbirds, is spreading rapidly in Germany. The disease, transmitted by mosquitoes, has intensified due to the wet and hot summer. So far, 1,500 cases have been reported, and authorities warn that the virus could also threaten humans.

Germany has recorded a sharp increase in Usutu virus cases, with its spread being particularly intense this year due to the wet, hot summer.

The virus, whose carriers are mosquitoes, mainly threatens birds, especially blackbirds, which are massively falling victim to the disease.

The International Union for Conservation of Nature has already reported 1,500 cases of sick or dead birds, and the number continues to grow, especially in the country's northwestern regions.

Usutu is an African virus first discovered 66 years ago in South Africa. It first appeared in Germany in 2010, initially covering a small area.

However, in 2018, it expanded rapidly eastwards and northwards, causing the mass die-off of blackbirds and other bird species, such as sparrows and magpies.

This year's exceptionally favourable weather conditions—high humidity and warmth—have caused a rapid increase in mosquito numbers, which carry the virus and lead to the rapid spread of the disease.

Although the Usutu virus mainly affects birds, there is a slight risk that it can also be transmitted to humans, usually through the bite of an infected mosquito.

Human symptoms are usually mild and include fever and rash, but in rare cases, severe neurological complications such as encephalitis can occur. However, most human infections are asymptomatic.

Authorities are appealing for reports of dead birds, especially blackbirds, providing the exact location of their discovery, which will help better monitor the development of the epidemic.

It is also advised that caution be exercised when removing a dead bird, using protective gloves and a plastic bag.

Although there is no way to prevent this disease, veterinary services and conservation organisations are trying to minimise its impact through regular monitoring and appeals to the public for help reporting dead bird cases.