Table 1.

Prevalences of Chlamydia psittaci and C. avium in pooled samples of feral pigeon droppings from two cities in the Netherlands.

	C. psittaci			C. avium
	No. of samples positive	Percentage positive	95% CI	No. of samples positive	Percentage positive	95% CI
Utrecht	1/41	2.4%a	0–7.2%	15/41	36.6%b,c	21.8–51.3%
Haarlem	3/40	7.5%a,c	0–15.7%	8/40	20.0%c	7.6–32.4%

^a,b,cPercentage prevalences indicated by a different letter are significantly different (p < 0.05).