Influenza activity persists in the United States, particularly in the Pacific Northwest, but is on the decline overall, federal health officials say.
Officials at the Centers for Disease Control and Prevention in Atlanta said the overall incidence of flu-like illness rose for the week ending April 21, after several weeks in decline.
Of the 2,987 specimens tested by U.S. World Health Organization and National Respiratory and Enteric Virus Surveillance System, collaborating laboratories found 22.2 percent were positive for influenza, up from 17.5 percent the previous week.
For Region 10: Alaska, Idaho, Oregon and Washington the number of respiratory specimens that tested positively for flu was 39 percent.
Three pediatric flu deaths were reported. The total for this year's influenza season was 18.
Widespread influenza activity was reported by four states: Alaska, California, Montana and New York.
Regional influenza activity was reported by 10 states: Arizona, Connecticut, Kentucky, Maine, Massachusetts, Nevada, New Jersey, Rhode Island, Vermont and Washington.
Sporadic influenza activity was reported by the District of Columbia and Arkansas, Delaware, Florida, Georgia, Hawaii, Illinois, Idaho, Indiana, Kansas, Maryland, Missouri, Nebraska, New Mexico, North Carolina, Oklahoma, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, and West Virginia.
Guam, the U.S. Virgin Islands and Mississippi reported no influenza activity. (c) UPI
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