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Relevant Population Characteristics for Immunization - Influenza, Adults

Relevant Population Characteristics

Age is a risk factor for influenza. Adults 65 years of age and older are at increased risk of contracting influenza due to a natural decline in the strength of their immune system. Children younger than five years, but especially younger than two years of age are considered high-risk for influenza. However, people of all ages with immune deficiencies or other high-risk conditions are at increased risk for influenza.

Related Relevant Population Characteristics Indicators:

The information provided above is from the Department of Health's Center for Health Data IBIS-PH web site ( The information published on this website may be reproduced without permission. Please use the following citation: " Retrieved Fri, 12 August 2022 2:21:59 from Department of Health, Center for Health Data, Indicator-Based Information System for Public Health Web site: ".

Content updated: Fri, 14 Jan 2022 06:34:50 MST