Patient infected with Shamonda virus dies in Lyon
By the AFREEQUE newsroom, based on La Nouvelle Tribune
A severely immunocompromised patient died in Lyon in early October after contracting the Shamonda virus, previously considered unable to infect humans. French authorities favour a link between the infection and brain complications, while the ECDC continues to investigate the cause of death and how transmission occurred.
French authorities announced on 22 October that a patient infected with the Shamonda virus had died in Lyon in early October. The disease was previously known to affect cattle. The health and agriculture ministries said this was the first documented human case and that the man was severely immunocompromised.
The Agriculture Ministry considers the brain complications observed before the death very likely to have been linked to the infection. The European Centre for Disease Prevention and Control (ECDC), which coordinates health risk assessments in the European Union, says investigations must still establish whether the virus caused or contributed to the death. Authorities are also seeking to determine how the patient was infected.
The leading theory is that a midge bit the man in eastern France, where livestock farms had already been affected. The virus was detected in cattle in late July 2026 in southern Germany, Switzerland and eastern France. Genetic analyses published in early October in the journal Eurosurveillance distinguish two European lineages, indicating two separate introductions to the continent.
France announced the first human case of the Shamonda virus on 22 October. The detection involved the man who died in Lyon.
Summary produced with the help of artificial intelligence tools, under AFREEQUE’s editorial responsibility.
