Figure 3. Cohort age-distributions of infection intensity categories with A. lumbricoides and T. trichiura.

Infection intensities were estimated using the Kato-Katz method in eggs per gramme of stool and intensity groups were categorized using WHO guidelines [11]: A. lumbricoides (light- <5,000 epg; moderate = 5,000–49,999; heavy – ≥50,000); T. trichiura (light - <1,000 epg; moderate – 1,000–9,999; heavy – ≥10,000).