News & Perspective

Nov 03, 2011

Nov 03, 2011

Two reports detail 2009 H1N1 coinfections with seasonal strains

(CIDRAP News) – Two research groups today reported rare cases of pandemic 2009 H1N1 coinfections with seasonal influenza strains, including a cluster in Cambodia and two patients from Italy's Veneto region.

Aug 08, 2011

Aug 08, 2011

Study puts global 2009 H1N1 infection rate at 11% to 21%

(CIDRAP News) – Researchers who combed through scores of serologic studies estimate that the global cumulative incidence of pandemic H1N1 influenza infection before vaccines became available was probably below 20%, far lower than the 50% that pandemic planners had envisioned as a possible worst case.

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