Table 2. Association between Serum Mannose-Binding Lectin (MBL) Deficiency and Single and Multiple Symptomatic Infections with Cryptosporidium.

Infection history	Serum MBL level <500 ng/mL
	OR (95% CI)	P
Symptomatic Cryptosporidium infections
0 (n = 83)	1.00 (reference)	…
1 (n = 38)	4.11 (1.74–9.72)	.001
≥2 (n = 14)	7.46 (2.43–22.9)	<.001
Symptomatic E. histolytica infections
0 (n = 92)	1.00 (reference)	…
1 (n = 29)	1.34 (0.50–3.63)	.55
≥2 (n = 14)	3.04 (1.1–8.34)	.03
Symptomatic Cryptosporidium infections, no E. histolytica infection
0 (n = 63)	1.00 (reference)	…
1 (n = 23)	3.48 (1.14–10.59)	.028
≥2 (n = 6)	10.45 (2.29–47.68)	.002
Symptomatic E. histolytica infections, no Cryptosporidum infection
0 (n = 63)	1.00 (reference)	…
1 (n = 16)	1.65 (0.421–6.46)	.472
≥2 (n = 4)	1.04 (0.122–8.94)	.968

NOTE. CI, confidence interval; OR, odds ratio.