Weekly FluView Map and Surveillance Report for Week Ending May 23, 2009
Map includes both seasonal flu and H1N1 flu activity. 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.
Read the original here Weekly FluView Map and Surveillance Report for Week Ending May 23, 2009
