In brief
The U.K. reports its first case of bird flu in a sheep, marking a global milestone. While culls are in place, the overall risk to humans remains low.
Bird flu has reached a new milestone in the U.K., infecting a sheep in Yorkshire, according to a government announcement on Monday. The H5N1 virus has historically affected birds and some mammals, but this is the first case of its kind in sheep, raising serious concerns about the potential spread of the infection. During routine checks, officials confirmed that avian influenza was found in a ewe. To prevent further spread, the government stated that all affected animals have been humanely culled. Fortunately, tests on the rest of the sheep flock, including the ewe’s lambs, came back negative.Britain's chief veterinary officer, Christine Middlemiss, urged animal owners to maintain strict hygiene and report any signs of infection. While human infections are rare—one case was reported recently in the West Midlands—the Centers for Disease Control in the U.S. has confirmed 70 cases since 2024. Bird flu can be transmitted through contact with infected animals or their droppings. The detection of the virus in sheep—which have previously cohabitated with poultry—raises questions about farming practices. Phil Stocker, from the National Sheep Association, stated there’s no threat to food safety but emphasizes the need for better separation of different species on farms. Meera Chand from the U.K.'s health security agency reassured the public that the risk of the avian flu virus spreading among humans remains extremely low, despite the ongoing global infections in mammals.
