Table 2.

Escherichia coli concentrations in hand rinse, food, and environmental samples (N = 1076)

Sample type	n	N	E. coli positive (%)	Mean ± SD (Min–Max)*
Water source E. coli > 1 MPN/100 mL	65	158	41	17 ± 139 (0–1,733)
Water source E. coli MPN/100 mL (Log10)
Stored household water E. coli > 1 MPN/100 mL	110	161	68	234 ± 667 (0–2,500)
Stored household water E. coli MPN/100 mL (Log10)
Soil in child play spaces E. coli > 1 MPN/gram dry weight	102	140	73	4564 ± 11,724 (0–50,158)
Soil in child play spaces E. coli MPN/gram dry weight (Log10)
Child food E. coli > 1 MPN/gram dry weight	69	129	53	326 ± 777 (0–2,500)
Child food E. coli MPN/gram dry weight (Log10)
Object/surface child mouthed E. coli > 1 MPN per object/100 cm2 surface area	70	197	36	95 ± 434 (0 − 2,500)
Object/surface child mouthed E. coli MPN per object/100 cm2 surface area (Log10)
Child hand rinse E. coli > 1 MPN/100 mL (both hands)	153	195	78	598 ± 2,284 (0–22,540)
Child hand rinse E. coli MPN (both hands) (Log10)
Caregiver hand rinse E. coli > 1 MPN/100 mL (both hands)	61	96	64	398 ± 1,259 (0–6,952)
Caregiver hand rinse E. coli (both hands) (Log10)

MPN = most probable number.

^*2,500 MPN E. coli was the detection limit for water, food, surface, and object samples.