In brief
In early October, France confirmed a fatal human case of the Shamonda virus, a disease that has long affected cattle and other livestock but never been seen in people. The patient, who was severely immunocompromised, contracted the virus likely through a midge bite in eastern France. Health authorities stressed that the risk to the general public remains negligible and that the European Centre for Disease Prevention and Control is monitoring the situation. The Shamonda virus has already been detected in animals across several European countries and has prompted global health agencies to investigate potential public‑health implications. The case underscores the importance of vigilance in zoonotic disease surveillance and the need for further research into cross‑species transmission.
French authorities confirmed on Thursday that the first known human case of the Shamonda virus (Shav) had been detected in a patient who died in early October, marking an unprecedented zoonotic spill‑over of a disease that has historically affected cattle and other livestock.
The patient, who was undergoing treatment for a severe underlying illness in a Lyon hospital, was found to have a highly compromised immune system, increasing his vulnerability to infections. Health officials say the fatal case is “exceptional” and that there is currently no broader public health threat.
Shamonda virus is primarily spread by bite of infected midges; it has caused fever, diarrhoea and reduced milk production in cattle, goats, sheep, alpacas and horses across Africa and Asia for decades. Until this incident the virus was not believed to infect humans, despite its long circulation in animal populations.
The European Centre for Disease Prevention and Control (ECDC) has started monitoring the outbreak and is collaborating with French and European partners to determine the virus’s potential impact on human health. The case has also been reported to the World Health Organization.
The first European detections of Shamonda virus in livestock came in late July, with positive samples collected from farms in Ireland, Germany, Italy, Spain and Jersey. France’s current case may have resulted from a midge bite in eastern France, where the virus appeared in animals earlier that spring.
While no evidence suggests the virus is now transmissible between humans, authorities are monitoring for possible changes in its behaviour and preparing containment protocols should a wider outbreak occur. Ongoing investigations will focus on vector‑borne transmission dynamics and the risk posed to immunocompromised individuals.
