Wednesday, November 4, 2009

N1H1 Statistics Update Week 42 US and Worldwide

2009-2010 Influenza Season Week 42 ending October 24, 2009


During week 42 (October 18-24, 2009), influenza activity increased in the U.S.

  • 8,268 (42.1%) 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.
  • All subtyped influenza A viruses being reported to CDC were 2009 influenza A (H1N1) viruses.
  • The proportion of deaths attributed to pneumonia and influenza (P&I) was above the epidemic threshold.
  • Twenty-two influenza-associated pediatric deaths were reported. Nineteen of these deaths were associated with 2009 influenza A (H1N1) virus infection 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. All 10 regions reported ILI above region-specific baseline levels.
  • Forty-eight 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.

World Health Organization Situation updates - Pandemic (H1N1) 2009

WHO Pandemic (H1N1) 2009 - update 72

“As of 25 October 2009, worldwide there have been more than 440,000 laboratory confirmed cases of pandemic influenza H1N1 2009 and over 5700 deaths reported to WHO.

As many countries have stopped counting individual cases, particularly of milder illness, the case count is likely to be significantly lower than the actual number of cases that have occurred.”

Because the southern hemisphere has its’ winter in July and August their flu season is winding up. Check out the map.

Here is a map of confirmed deaths

You can find the cumulative total for regions at the bottom of Update 72

Overview of the current Pandemic H1N1 2009 situation

This pandemic is currently referred to as of “moderate” severity, with the overwhelming majority of patients recovering, even without medical treatment, within a week of the onset of symptoms. However, the virus has also caused severe illness and deaths.

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