The state also installed pig traps and built a permanent fence to control the epidemic. The effectiveness of these efforts, undertaken in cooperation with various authorities and states, was confirmed by EU experts .
But despite these measures, the disease spread to a pig farm in Groß-Gerau, leading to the culling of pigs at nine facilities. The disease was particularly prevalent in the wild boar population, with more than half of the carcasses testing positive for the virus .