H5N1 bird flu was confirmed in a pig on a backyard farm in Oregon, the first detection of the virus in swine in the country, the U.S. Department of Agriculture said on Wednesday.

About 6,000 pigs are kept at Northmoor Farm. Cranswick as a whole slaughters more than 34,000 pigs per week. A statement on its website says: “ Animal welfare is at the heart of our business.” ...