The Department of Agriculture, Food and the Marine (DAFM) has confirmed Ireland's first bluetongue infection contracted during the 2026 vector season, following diagnostic testing on a heifer in County Wexford.

The virus, identified as bluetongue virus serotype 3 (BTV-3), was detected during a post-mortem examination of an unvaccinated 16-month-old heifer. According to the department, no clinical signs of the disease were observed in the animal before its death.

While BTV-3 was detected in 11 Irish herds during early 2026, those cases were attributed to infected biting midge incursions that occurred in late autumn 2025. The Wexford detection marks the first case resulting from infection during Ireland's active 2026 transmission season.

Bluetongue is a viral disease spread among ruminants—such as cattle, sheep, and goats—primarily through biting midges. DAFM emphasized that the virus presents no danger to human health or food safety, meaning milk and meat products remain safe for consumption.

Department officials highlighted the critical role of submitting unexplained animal mortalities to regional veterinary laboratories for surveillance. DAFM also advised farmers to consult private veterinary practitioners regarding vaccination options, noting that three BTV-3 vaccines are approved for use in Ireland and remain the most effective defense against spread.