City Health Information
Volume 32 (2013) New York City Department of Health and Mental Hygiene No. 3; 11-18
 

IN THIS ISSUE

 

Influenza Prevention and Control, 2013-2014
  • Vaccinate everyone aged 6 months and older against influenza as early as possible.
  • Give inactivated vaccine to all pregnant women in any trimester.
  • Get your flu vaccination as soon as vaccine becomes available and ensure that your staff does the same.

 

VACCINE EFFECTIVENESS

Vaccine effectiveness depends on numerous factors, including the age and health of those being vaccinated, the match between the vaccine influenza strains and circulating viruses, and the outcome being studied (27). Even moderate vaccine effectiveness can reduce influenza-related illness, antibiotic use, time lost from work, hospitalizations, and deaths (3). In 2012-2013, vaccine effectiveness in preventing influenza-related outpatient medical visits was demonstrated to be 52% overall, with decreased effectiveness in adults aged 65 and older (32%) (28). Although protection from outpatient influenza-related illness was limited in this age group, vaccination has been demonstrated to help protect against more serious outcomes, including hospitalization. Vaccinated community-dwelling adults aged 50 and older had a 61% lower risk of influenza-related hospitalization during the 2006-2009 influenza seasons (29). In 2011-2012, vaccinated adults aged 50 and older had a 77% lower risk of related hospitalization and adults aged 18 and older had a 71% lower risk (30).

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