Russia's Multican-8 vaccine batch linked to fatal Aujeszky's disease in dogs

Russia's state veterinary regulator confirmed that batch 20 of the Multican-8 dog vaccine was contaminated with live Aujeszky's disease virus, which is typically fatal in dogs. Owners across at least 10 regions have reported hundreds of deaths since August, indicating a widespread contamination event. The incident raises concerns about vaccine safety oversight and potential zoonotic or agricultural spillover risks.