Washington
Dozens reported across 6 states
Four new cases of bird flu were detected in farmworkers in Washington state this week. Human infections have cropping in six states as the virus spreads among farm animals.
The Summary Four new presumed cases of bird flu in farmworkers in Washington state bring the U.S. total to 31.
The risk that the virus will mutate to spread easily between people is low, but experts say ongoing transmission in cows is worrisome.
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