| Weekly FluView Map and Surveillance Report for Week Ending December 12, 2009 |
|
During week 49 (December 6-12, 2009), influenza activity continued to decrease in the U.S.
|
| Weekly FluView Map and Surveillance Report for Week Ending December 12, 2009 |
|
During week 49 (December 6-12, 2009), influenza activity continued to decrease in the U.S.
|