Table 2. Estimated Annual Infection Risks.

	Model output using soil ingestion estimates from the U.S. EPA Exposure Factors Handbook
	estimated annual risk of G. duodenalis infection
	percentile	10th (%)	50th (%)	90th (%)	MapSan point prevalence
age	<6 months	9.6	15	29	13
	6–11 months	16	26	54	22
	12–23 months	20	31	48	59
	24–71 months	13	21	38	73
	estimated annual risk of Shigella/EIEC infection				point prevalence
age	<6 months	4.4	7.3	14	5.0
	6–11 months	7.2	12	20	21
	12–23 months	9.4	15	25	36
	24–71 months	5.9	10	19	68

	Model output using soil ingestion estimates from Kwong et al. 2019
	estimated annual risk of G. duodenalis infection
	percentile	10th (%)	50th (%)	90th (%)	MapSan point prevalence
age	3–5 months	39	57	83	13
	6–11 months	50	69	90	22
	12–23 months	53	71	96	59
	24–35 months	40	57	80	72
	36–47 months	43	62	83	75
	estimated annual risk of Shigella/EIEC infection				point prevalence
age	3–5 months	19	29	45	5.0
	6–11 months	25	36	51	21
	12–23 months	28	40	56	36
	24–35 months	21	31	47	56
	36–47 months	21	32	47	73

	Model output using geophagy estimates from Geisler et al. 1997
	estimated annual risk of G. duodenalis infection
	percentile	10th (%)	50th (%)	90th (%)
	geophagy	>99%	>99	>99
	estimated annual risk of Shigella/EIEC infection
	geophagy	>99%	>99	>99

^aNote: MapSan point prevalence data represents a total of 922 children enrolled in the MapSan trial. Annual risk is for a single infection.