Table 1.

Results of serological tests and polymerase chain reaction (PCR) performed on blood samples of humans, dogs, and horses from six municipalities in the state of Espírito Santo, southeastern Brazil^*

Agents investigated	No. individuals that showed to be positive (%)
	Humans				Dogs				Horses
	Rural (N = 100)	Urban (N = 9)	School (N = 92)	Total (N = 201)	Rural (N = 71)	Urban (N = 14)	School (N = 7)	Total (N = 92)	Rural (N = 24)	School (N = 3)	Total (N = 27)
Serology
Borrelia burgdorferi	8 (8.0)	1 (11.1)	0 (0)	9 (4.5)	38 (53.5)	7 (50.0)	2 (28.6)	47 (51.1)	1 (4.2)	0 (0)	0 (0)
Rickettsia rickettsii	31 (31.0)	2 (22.2)	16 (17.4)	49 (24.3)	4 (5.6)	0 (0)	0 (0)	4 (4.3)	4 (16.7)	3 (100)	7 (25.9)
R. parkeri	28 (28.0)	2 (22.2)	21 (22.8)	41 (20.4)	2 (2.8)	0 (0)	0 (0)	2 (2.2)	2 (8.3)	2 (66.7)	4 (14.8)
R. amblyommii	33 (33.3)	3 (33.3)	16 (17.4)	52 (25.9)	3 (4.2)	0 (0)	0 (0)	3 (3.3)	3 (2.5)	2 (66.7)	5 (18.5)
R. rhipicephali	36 (36.0)	4 (44.4)	17 (18.5)	57 (28.3)	2 (2.8)	1 (7.1)	0 (0)	3 (3.3)	3 (2.5)	2 (66.7)	5 (18.5)
R. felis	31 (31.0)	4 (44.4)	16 (17.5)	51 (25.3)	2 (2.8)	2 (14.3)	0 (0)	4 (4.3)	1 (4.2)	2 (66.7)	4 (14.8)
R. bellii	17 (17.0)	2 (22.2)	10 (10.9)	39 (19.4)	3 (4.2)	1 (7.1)	0 (0)	4 (4.3)	2 (8.3)	3 (100)	5 (18.5)
Ehrlichia canis	3 (3.0)	0 (0)	1 (1.1)	4 (2.0)	33 (46.5)	4 (28.6)	1 (14.3)	38 (41.3)	ND	ND	–
Babesia canis vogeli	0 (0)	0 (0)	0 (0)	0 (0)	25 (46.5)	6 (42.9)	0 (0)	31 (33.7)	ND	ND	–
Babesia bovis	0 (0)	0 (0)	0 (0)	0 (0)	ND	ND	ND	–	ND	ND	–
Theileria equi	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	24 (100)	3 (100)	27 (100)
PCR
Anaplasmataceae	0 (0)	0 (0)	0 (0)	0 (0)	22 (31.0)	3 (21.4)	0 (0)	25 (27.2)	0 (0)	0 (0)	0 (0)
Borrelia	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)
Babesia/Theileria	0 (0)	0 (0)	0 (0)	0 (0)	14 (19.7)	6 (42.9)	0 (0)	20 (21.7)	6 (25.0)	0 (0)	6 (22.2)
Hepatozoon†	ND	ND	ND	–	46 (64.8)	8 (57.1)	0 (0)	54 (58.7)	ND	ND	–

^*ND = not determined.

^†Previously reported data.⁴⁵