During week 20 (May 17 – 23, 2009), influenza activity decreased in the United States, however there are still higher levels of influenza-like illness than is normal for this time of year.
CDC – Influenza (Flu) | Weekly Report: Influenza Summary Update Week 20, 2008-2009 Season
Fascinating. Still a lot of flu around, including H1N1, more than normal for this time of year in fact. Looking at the graphs would seem to indicate that despite the appearance of H1N1 and a late season, last year (07–08) was worse.
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