U.S. H1N1 flu flu cases up to 37,000

July 10, 2009 3:20:09 PM PDT
U.S. health officials say swine flu activity is dying down a bit, but the number of cases has surpassed 37,000 and deaths hit 211.

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The numbers rose from 170 deaths and nearly 34,000 confirmed and suspected swine flu cases reported last week.

Officials believe those cases -- which sought treatment and underwent testing -- are just the tip of the iceberg. They estimate more than 1 million Americans have been infected with the virus, though many probably had only mild illness.

Swine flu is the predominant flu type circulating currently, with nine states reporting widespread cases.

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