Table 3.

Results of testing for other infectious agents (using serology, PCR, or both) in dogs with PLN that were seroreactive (n = 40) or seronegative (n = 78) to Borrelia C6 antigen

	Borrelia C6 seroreactive (# positive/# tested)	Borrelia C6 seronegative (# positive/# tested)
Dirofilaria immitis	0/30	0/67
Ehrlichia canis	1/39	4/77
Anaplasma spp.	6/38	2/74
Rickettsia rickettsii	2/18	1/33
Leptospira spp. (titer >1:800)	0/24	3/26
Babesia spp.	0/8	2/21
Bartonella spp.	0/1	0/5
Coccidioides immitis	…	1/4