Table 2.

Detection of Bacillus cereus spores in raw human milk using ELISA.

	Optical densitya (OD, 450 nm)	Number of samples (n = 152)
Pellet and supernatant milk
Presence of B. cereus spores	0.62 ± 0.05	n = 32
Absence of B. cereus spores	0.03 ± 0.01	n = 120
Controls for B. cereus sporesb
<100 CFU/mL	0.06 ± 0.01	n = 8
10,000 CFU/mL	0.17 ± 0.02	n = 8
21,000 CFU/mL	0.42 ± 0.07	n = 8

^aValue are mean ± SEM

^bHuman milk controls were enumerated from MYP for viable B. cereus