France Reports First Known Human Case of Livestock-Linked Shamonda Virus

News in Brief:

— France has reported the first known human case of Shamonda virus in a severely immunocompromised patient who later died.

— Health authorities assess the risk to the general public as low, while investigations continue into the suspected insect-borne infection.

France recently confirmed the first known human case of Shamonda virus, a disease primarily associated with livestock, after detecting it in a patient who died in October 2026.

The country’s Ministries of Health and Agriculture said the patient was severely immunocompromised. They described the infection as exceptional and said there was currently no identified risk to the general public.

Meanwhile, the World Health Organisation (WHO) also said that the likelihood of wider transmission was low, because available evidence suggested the case was isolated.

Investigation on Virus Origin

The virus, first identified in Nigeria in the mid-1960s, belongs to the Orthobunyavirus genus and primarily affects livestock, particularly cattle. Culicoides, a type of biting midge, transmits the virus, and it has been detected in animals across parts of Africa and Asia.

French investigators suspect the patient contracted the infection from an infected midge in eastern France, where the virus circulated among animals during the spring and summer of 2026.

Health authorities said biological, clinical and epidemiological investigations were underway to establish how the infection occurred. The inquiry involves specialists in human, animal and environmental health, reflecting the need to examine potential links between animal infections and human exposure.

The WHO and the European Centre for Disease Prevention and Control have also been notified. Although the case marks a previously undocumented human infection, health authorities have stressed that current evidence does not indicate a wider public health threat. Investigations are expected to provide further information about the transmission route and the circumstances surrounding the case.