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. 2017 Feb 17;66(6):159-166.
doi: 10.15585/mmwr.mm6606a2.

Update: Influenza Activity - United States, October 2, 2016-February 4, 2017

Lenee Blanton  1 , Desiree Mustaquim  1 , Noreen Alabi  1 , Krista Kniss  1 , Natalie Kramer  1 , Alicia Budd  1 , Shikha Garg  1 , Charisse N Cummings  1 , Alicia M Fry  1 , Joseph Bresee  1 , Wendy Sessions  1 , Rebecca Garten  1 , Xiyan Xu  1 , Anwar Isa Abd Elal  1 , Larisa Gubareva  1 , John Barnes  1 , David E Wentworth  1 , Erin Burns  1 , Jacqueline Katz  1 , Daniel Jernigan  1 , Lynnette Brammer  1
Affiliations

Update: Influenza Activity - United States, October 2, 2016-February 4, 2017

Lenee Blanton et al. MMWR Morb Mortal Wkly Rep. .

Abstract

This report summarizes U.S. influenza activity* during October 2, 2016-February 4, 2017,† and updates the previous summary (1). Influenza activity in the United States began to increase in mid-December, remained elevated through February 4, 2017, and is expected to continue for several more weeks. To date, influenza A (H3N2) viruses have predominated overall, but influenza A (H1N1)pdm09 and influenza B viruses have also been identified.

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Figures

FIGURE 1
FIGURE 1
Number and percentage of respiratory specimens testing positive for influenza reported by clinical laboratories, by influenza virus type and surveillance week — United States, October 2, 2016–February 4, 2017 * 38,244 (9.7%) of 392,907 tested were positive during October 2, 2016–February 4, 2017.
FIGURE 2
FIGURE 2
Number of respiratory specimens testing positive for influenza reported by public health laboratories, by influenza virus type, subtype/lineage, and surveillance week — United States, October 2, 2016–February 4, 2017 * N = 15,781. † As of February 10, 2017.
FIGURE 3
FIGURE 3
Percentage of visits for influenza-like illness (ILI) reported to CDC, by surveillance week — Outpatient Influenza-Like Illness Surveillance Network, United States, 2016–17 influenza season and selected previous influenza seasons * Defined as fever (≥100°F [≥37.8°C]), oral or equivalent, and cough and/or sore throat, without a known cause other than influenza.
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References

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