Table 1.

Population-averaged prevalence of Giardia duodenalis in cows (n = 892) and calves (n = 183), and herd-level prevalence in dairy tie-stall (n = 298), dairy free-stall (n = 298) and beef herds (n = 296) in Prince Edward Island, Canada

	Prevalence (95% CI)a	Range within herds
Cows	0.38 (0.30–0.46)	0–0.79
Dairy tie-stall	0.40 (0.32–0.49)	0.17–0.57
Dairy free-stall	0.41 (0.29–0.53)	0.10–0.63
Beef	0.32 (0.18–0.51)	0–0.79
Calves	0.51 (0.37–0.66)	0–0.82

^aConfidence interval.