Pertussis risk factors

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

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Overview

Children who are too young to be fully vaccinated and those who have not completed the primary vaccination series are at highest risk for severe illness. Like measles, pertussis is highly contagious with up to 90% of susceptible household contacts developing clinical disease following exposure to an index case. Adolescents and adults become susceptible when immunity wanes.

Risk Factors

The risk factors are Pertussis involve its highly contagious nature:

• Coming into close proximal contact with an infected individual
• Being a child or infant
  • Lesser-developed immune system
  • Exposure to Pertussis pre-vaccination
• Not having received the DTaP vaccination or the TDap Booster
• Being predisposed to infection due to immunodeficient conditions