Update: Influenza activity-United States, October 2, 2011-February 11, 2012

Lynnette Brammer, Scott Epperson, Krista Kniss, Desiree Mustaquim, Amber Bishop, Rosaline Dhara, Michael Jhung, Lenee Blanton, Teresa Wallis, Sandra S. Chaves, Lyn Finelli, Larisa Gubareva, Joseph Bresee, Alexander Klimov, Nancy Cox, Adena Greenbaum