Fig. 2

Bar graph showing the percentage of household (all) (a), bed (b), and living room floor (c) dust samples that were positive for A. lumbricoides DNA stratified by A. lumbricoides infection intensity in children’s fecal samples. Sample numbers for each group are shown (n). Intensity groups are those of the WHO (1987) [11]: light, < 5000 eggs per gram (epg); moderate. 5000–50,000 epg; and heavy, > 50,000 epg. Percent positivity for each infection intensity group is shown at the head of each bar