Figure 4From: The Lake Victoria island intervention study on worms and allergy-related diseases (LaVIISWA): study protocol for a randomised controlled trialPrevalence of Schistosoma. mansoni, hookworm, Strongyloides stercoralis, and Trichuris trichiura infections, by age. S. mansoni and T. trichiura determined by Kato-Katz, N. americanus, and S. stercoralis determined by PCR.Back to article page