RT Journal T1 Update: Influenza activity—united states, october 3–december 11, 2010 JF JAMA JO JAMA YR 2011 FD February 9 VO 305 IS 6 SP 556 OP 558 DO UL http://dx.doi.org/ AB During October 3–December 11, 2010, influenza activity remained low in most regions of the United States. Influenza viruses characterized thus far in the influenza season are well matched to the strains included in the 2010-11 influenza vaccine. This report summarizes U.S. influenza activity* during this period.