CHICAGO—California reported a third human case of bird flu on Wednesday in a dairy worker who had contact with infected cattle and said the state identified two more possible cases in people.
Officials in the most populous U.S. state expect to confirm additional cases in people who have contact with infected dairy cattle, the California Department of Public Health said.
The outlook for more cases follows a surge in infections of dairy cows in the biggest milk-producing U.S. state.
Nearly 300 dairy herds across 14 states tested positive so far this year, with about a third of the cases found in California since late August, according to the U.S. Department of Agriculture. Pasteurized milk and dairy products remain safe to consume, California’s public health department said….