Which age groups have the highest prevalence of H1N1 influenza (swine flu)?

Updated: Apr 09, 2019
  • Author: Michael Stuart Bronze, MD; Chief Editor: Russell W Steele, MD  more...
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Belongia et al provide an excellent epidemiologic comparison of the clinical characteristics of the 2009 influenza A H1N1 versus other seasonal influenza A strains. [22] In their study, the clinical manifestations and risk for hospitalization were similar between the 2009 H1N1 strain and other seasonal influenza A strains. However, children were disproportionately affected by the 2009 H1N1 strain but not necessarily by severity of illness.

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