France reports first known human Shamonda virus infection

French authorities have reported the first known human infection with Shamonda virus, which had previously been identified in animals. The patient was being treated for a serious illness in a Lyon hospital and was severely immunocompromised.

The patient died in early October. French officials said neurological complications were very likely linked to the virus, based on initial findings. The ECDC said investigations into whether the virus caused or contributed to the death, and how the infection was acquired, are ongoing. French authorities believe the patient was likely infected by a midge bite in eastern France.

France’s health ministry said no public health risk to the general population had been identified to date. The WHO said it had not made a formal risk assessment, but current information suggested the case was isolated and unlikely to lead to wider spread. The ECDC is working with French and European partners to investigate the infection and strengthen testing capacity.