Which age groups have the highest prevalence of avian influenza?

Updated: Feb 12, 2020
  • Author: Nicholas John Bennett, MBBCh, PhD, MA(Cantab), FAAP; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

Avian influenza has the highest case-fatality rate among persons aged 10-39 years. Unlike seasonal influenza, which disproportionately affects very young and very old individuals, young adults make up a large proportion of the avian influenza cases.

Fifty percent of reported cases have been in people younger than 20 years. Forty percent of cases involve persons aged 20-40 years.

In Egypt, avian influenza has been associated with a relatively low mortality rate, which seems to be associated with a high rate of infection in young children (< 10 y); as of May 2009, the mortality rate in this subpopulation has been zero. The significance and reproducibility of these findings remains to be seen. [13]


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