Figure 1. Prevalence and intensity for Ascaris, hookworm and Trichuris in Panamanian preschool children.

Prevalence (A, C, E) and intensity (B, D, F) for Ascaris (A,B), hookworm (C,D) and Trichuris (E,F) were assessed by Kato Katz (dark grey bar – left vertical axis) and FLOTAC (light grey bar – right vertical axis) during two reinfection cycles. Different letters indicate significant differences (P<0.05) among sample periods (lower case Kato Katz comparisons; upper case FLOTAC comparisons). Solid vertical bar separates Kato Katz from FLOTAC data. A single dose of Albendazole (200 mg: 1–2 yrs, 400 mg: 3–5 yrs) was delivered after the baseline samples in each cycle and children who remained infected after treatment in Cycle 2 received a second dose. Data presented consider each cycle independently resulting in a different sample group for the 9 mo reinfection point of Cycle 1 and the baseline of Cycle 2. Each data point represents the population estimates based on all available fecal samples at each time point for children who received treatment at baseline of the respective cycle.