During week 43 (October 19-25, 2008), a low level of influenza activity was reported in the United States.
- Five (0.4%) specimens tested by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories, and reported to CDC/Influenza Division, were positive for influenza.
- The proportion of deaths attributed to pneumonia and influenza (P&I) was below the epidemic threshold.
- The proportion of outpatient visits for influenza-like illness (ILI) was below national and region-specific baseline levels.
- Thirteen states and Puerto Rico reported sporadic influenza activity; 36 states and the District of Columbia reported no influenza activity; and one state did not report
