Table 3. Epidemiologic investigation of Leptospira spp. in 22 cart horses of Curitiba, PR, Brazil, 2013. (Statistical test: Fisher's test).

	November 2010
	Reagent	Non reagent	p
Contact with mud, garbage and sewage
Yes	9 (60%)	3 (42.86%)	0.27
No	6 (40%)	4 (57.14%)
House located less than 20 meters from garbage accumulation
Yes	9 (60%)	6 (85.71%)	0.20
No	6 (40%)	1 (14.29%)
House located less than 10 meters from open sewage
Yes	11 (73.33%)	5 (71.43%)	0.38
No	4 (26.67%)	2 (28.57%)
Presence of rodents near house
Yes	14 (93.33%)	4 (57.14%)	0.07
No	1 (6.67%)	3 (42.86%)
Flooding near house
Yes	8 (53.33%)	0	0.02
No	7 (46.67%)	7 (100%)