Figure 5. Geometric mean egg counts per gram of stool (as assessed by a single Kato-Katz smear) for individuals with STH infections in Mainang village in 2002 (before the 1st round of MDA, black bars) and in 2009 (22 months after the 6th and final round of DEC/albendazole MDA, gray bars).
The data are shown by age group. Error bars indicate the 75 percentiles, and the broken lines represent thresholds for light and moderate infection intensities according to WHO guidelines. The number on top of each column represents the number of positive individuals tested per age group. A Ascaris lumbricoides. B Hookworm (mainly Necator americanus).