This new virus, circulating in France since June 2026, shares similarities with the Schmallenberg virus, known for causing abortions and congenital malformations in newborns. Transmission occurs primarily through small biting insects of the genus Culicoides. Currently, Shamonda-Europe affects cattle, horses, sheep, goats, and camelids. In Landes, it was identified on October 10, 2026, on a dairy cattle farm.
In affected cattle, observed symptoms include acute diarrhea, a brief period of fever, lethargy, decreased rumination, and a significant drop in milk production. Early or late abortions are also reported. While the virus primarily affects cattle, it can impact small ruminants.
This condition is not considered a regulated disease, meaning there are no mandatory sanitary measures or animal movement restrictions currently in place. However, farmers are advised to consult their veterinarian if they observe suspicious clinical signs. It is recommended to closely monitor pregnant females and newborns in the coming months, and to report any malformations in newborns to your veterinarian.
There is currently no vaccine available against Shamonda-Europe. The most effective preventive measures rely on clinical surveillance of animals and protecting herds from Culicoides midges. Proper management of effluents, bedding, and storage areas can limit breeding habitats for these insects, especially near animals. Maintaining animals in good general health, with access to clean water, balanced nutrition, and adequate mineral and vitamin intake, also helps support the herd's immune defenses.
