Strongyloidiasis epidemiology and demographics

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

Overview

It is thought to affect 30–100 million people worldwide, mainly in tropical and subtropical countries. Worldwide efforts are aimed at eradicating the infection in high-risk groups.

Epidemiology and Demographics

Incidence and Prevalance

• The global prevalence of Strongyloides is unknown, but experts estimate that there are between 30–100 million infected persons worldwide.
• In the United States, a series of small studies in select populations have shown that between 600-1000 per 100,000 persons sampled were infected.
• Studies in immigrant populations have shown a much higher percentage of infected persons ranging from 460-1000 per 100.000 persons.

Geographic distrubution

• 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

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

Gender

Males and females are equally affected.