The weekly CDC Flu View (Week 42) paints a telling tale of disease across the U.S. A quick summary reflects the following:
- Of all of the specimens tested by collaborating WHO laboratories and reported to CDC/Influenza Division, all subtyped influenza A viruses were the pandemic strain H1N1 virus.
- The proportion of deaths attributed to pneumonia and influenza (P&I) was above the epidemic threshold.
- 22 influenza-associated pediatric deaths were reported.
- Nineteen of these deaths were associated with the pandemic strain H1N1 and three were associated with an influenza A virus for which the subtype was undetermined.
- The proportion of outpatient visits for influenza-like illness (ILI) was above the national baseline.
- 48 states reported geographically widespread influenza activity, Guam and two states reported regional influenza activity, the District of Columbia and Puerto Rico reported local influenza activity, and the U.S. Virgin Islands did not report.
Pneumonia and Influenza Hospitalization and Death Tracking
From August 30 – October 24, 2009 the following statistics were reported to the CDC.
- 12,466 laboratory-confirmed influenza associated hospitalizations
- 530 laboratory-confirmed influenza associated deaths
- 25,985 pneumonia and influenza syndrome-based hospitalizations
- 2,916 pneumonia and influenza syndrome-based deaths
Influenza-Associated Pediatric Mortality
- 22 influenza-associated pediatric deaths were reported to CDC during week 42 from the following states:
- Arizona , Florida, Georgia, Guam, Montana, Ohio, South Dakota, Tennessee , Texas , Washington, and Wisconsin).
- Nineteen of these deaths were associated with pandemic H1N1 virus infection and three were associated with an influenza A virus for which the subtype is undetermined. .
- Since August 30, 2009, CDC has received 74 reports of influenza-associated pediatric deaths that occurred during the current influenza season:
- 9 deaths in children less than 2 years old
- 9 deaths in children 2-4 years old
- 27 deaths in children 5-11 years old
- 29 deaths in individuals 12-17 years old).
- Sixty-five of the 74 deaths were due to pandemic H1N1 virus infections, and the remaining nine were associated with influenza A virus for which the subtype is undetermined.
Week 42 Nationwide
- Regional influenza activity was reported by Hawaii, South Carolina and Guam.
- Local influenza activity was reported by the District of Columbia and Puerto Rico.
- The U.S. Virgin Islands did not report.