Which age groups have the highest prevalence of cryptosporidiosis?

Updated: Nov 11, 2019
  • Author: Melinda B Tanabe, MD; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

The peak incidence of cryptosporidiosis is in children younger than 5 years. Infection is infrequently diagnosed in immunocompetent adults in resource-limited countries. A second peak includes women of childbearing age (likely due to contact with infected children). Cryptosporidiosis can occur in persons with AIDS of any age.

Children younger than 2 years may be more susceptible to infection, possibly because of increased fecal-oral transmission in this age group and because of a lack of protective immunity. Waterborne epidemics in industrialized countries affect all ages.


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