TABLE 2.

Results of stool testing with a commercial EIA

Genus	Time (mo) and fixative	No. of samples negative with kit/no. negative by microscopy	No. of samples positive with kit/no. positive by microscopy (%)	Mean optical density
Giardia	0
	Formalin	5/5	25/27 (93)	2.72
	STF	4/4	24/26 (92)	1.30
	3
	Formalin	6/6	17/19 (89)	2.14
	STF	6/6	16/19 (84)	1.58
Cryptosporidium	0
	Formalin	31/31	1/1 (100)	2.91
	STF	29/29	1/1 (100)	3.44
	3
	Formalin	24/24	1/1 (100)	3.09
	STF	24/24	1/1 (100)	3.42