Table 1. Prevalence and distribution of Cryptosporidium species according to age group in pre-weaned calves.

Age (days)	Sample size	No. of positive (%)	95% CI	Cryptosporidium species (No.)
				C. parvum	C. ryanae	C. bovis
1−10	271	53 (19.6%)	14.8–24.3	49	3	1
11−20	92	24 (26.1%)	17.1–35.1	23	1	0
21−30	39	3 (7.7%)	0.0–16.1	0	3	0
31−60	58	6 (10.3%)	2.5–18.2	0	5	1
Total	460	86 (18.7%)	15.1−22.3	72	12	2