Synopsis:During week 2 (January 6-12), influenza activity remained elevated in the United States, but decreased in some areas.
- Viral Surveillance: Of 12,360 [ 12,876 ] specimens tested and reported by collaborating laboratories, 3,638 (29.4%) [ 4,222 (32.8%) ] were positive for influenza.
- Pneumonia and Influenza Mortality: The proportion of deaths attributed to pneumonia and influenza (P&I) was above [ slightly above ] the epidemic threshold.
- Influenza-Associated Pediatric Deaths: Nine [ Two ] influenza-associated pediatric deaths were reported.
- Influenza-Associated Hospitalizations: A cumulative rate for the season of 18.8 laboratory-confirmed influenza-associated hospitalizations per 100,000 population was reported. Among all cases, 49.6% were in adults 65 years and older.
- Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 4.6% [ 4.3% ]; this is above the national baseline of 2.2%. All 10 regions reported ILI above region-specific baseline levels. Thirty states [ Twenty-four ] and New York City experienced high ILI activity; 10 states experienced moderate activity; 7 states experienced low activity; 3 states experienced minimal activity, and the District of Columbia had insufficient data.