Fig. 3From: The impact of community-wide, mass drug administration on aggregation of soil-transmitted helminth infection in human host populationsAge-prevalence over time in which elimination of Necator americanus infection was not achieved before mass drug administration was implemented (a) and post-MDA (b). Age groups (years): 1, 0–5; 2, 6–10; 3, 11–15; 4, 16–30; 5, 31–50; 6, 51+Back to article page