The map of flu activity across the United States continues to darken, both figuratively and literally, as case numbers spike ...
More than 156 million chickens, ducks, turkeys and other fowl have been slaughtered across the United States since the ...
New Mexico, Texas and Nebraska are among the states with the highest number of people showing flu-like symptoms.
Maps of bird flu cases show the spread of the virus across the United States. Most people infected with bird flu in the U.S.
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