Strongyloidiasis epidemiology and demographics

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aditya Ganti M.B.B.S. [2]

Overview

The global prevalence of Strongyloides is unknown, but experts estimate that there are between 30–100 million infected persons worldwide, mainly in tropical and subtropical countries. Strongyloidiasis infection is more common in the pediatric age group (ages 2-10 years).

Epidemiology and Demographics

Prevalence

• The global prevalence of Strongyloides is unknown, but recent studies estimate that there are between 30–100 million infected persons worldwide.

Incidence

• The incidence of strongyloidiasis is approximately 600-1,000 per 100,000 individuals in the United States.
• The incidence of strongyloidiasis is approximately 460-1,000 per 100,000 individuals in immigrant populations.

Geographic distribution

• Strongyloides is known to exist on all continents except for Antarctica, but it is most common in the tropics, subtropics, and in warm temperate regions.

Age

• Strongyloidiasis occurs in all age groups but it is more common in the pediatric age group (ages 2-10 years).

Gender

• Males are more commonly affected by strongyloidiasis than females.
• The male to female ratio is approximately 2-3 to 1.

Race

• There is no racial predilection to strongyloidiasis.