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Influenza A/H1N1: 1 November
1 November 2009
United States
  • Visits to doctors for influenza-like illness (ILI) increased steeply since last week in the United States, and overall, are much higher than what is expected for this time of the year. ILI activity now is higher than what is seen during the peak of many regular flu seasons.
  • Total influenza hospitalization rates for laboratory-confirmed flu are climbing and are higher than expected for this time of year. Hospitalization rates continue to be highest is younger populations with the highest hospitalization rate reported in children 0-4 years old.
  • The proportion of deaths attributed to pneumonia and influenza (P&I) based on the 122 Cities Report has increased and has been higher than what is expected at this time of year for four weeks now. In addition, 22 flu-related pediatric deaths were reported this week; 19 of these deaths were confirmed 2009 H1N1, and three were influenza A viruses, but were not subtyped. Since April 2009, CDC has received reports of 114 laboratory-confirmed pediatric 2009 H1N1 deaths and another 12 pediatric deaths that were laboratory confirmed as influenza, but where the flu virus subtype was not determined. 
    Source: CDC

    The numbers continues to increase. Norway report 27 cases admitted to intensive care compared to none in Sweden and Finland and one in Denmark. 11 fatal cases are reported from Norway compared to 1 from Iceland and Finland each, 2 from Sweden and none from Denmark. 
    The higher number of fatalities in Norway may simply reflect that the pandemic has been spreading earlier compared to Denmark, Finland and Sweden.
    Source: ECDC