According to the latest CDC Update, flu is expected to continue for several more weeks. Influenza activity in the United States began to increase in mid-December, remained elevated through February 4, 2017, and is expected to continue. To date, influenza A (H3N2) viruses have predominated overall, but influenza A (H1N1)pdm09 and influenza B viruses have also been identified.
CDC collects, compiles, and analyzes data on influenza activity year round in the United States. Timing of influenza activity and predominant circulating influenza viruses vary by season. For more details, see the article itself.
Blanton L, Mustaquim D, Alabi N, et al. Update: Influenza Activity — United States, October 2, 2016–February 4, 2017. MMWR Morb Mortal Wkly Rep 2017;66:159–166.