Follow-up of Bernese Mountain dogs and other dogs with serologically diagnosed Borrelia burgdorferiinfection: What happens to seropositive animals?

Table 1 Antibodies against B. burgdorferi in Bernese Mountain dogs and control dogs at the first evaluation and after a median of 2.7 years.

	First evaluation
	Bernese Mountain dogs (N = 53)		Control dogs (N = 30)
	B. burgdorferi serology
Serology result at the second evaluation	positive (N = 22)	negative (N = 31)	positive (N = 11)	negative (N = 19)
remained negative		21 (68%)		14 (74%)
remained positive	15 (68%)		7 (64%)
seroconverted*		7 (32%)		4 (36%)
seroreverted**	10 (32%)		5 (26%)

*seroconversion: Serologic test for antibodies against B. burgdorferi was negative in the first evaluation and changed to positive in the second.
**seroreversion serologic test for antibodies against B. burgdorferi was positive in the first evaluation and changed to negative in the second.

ISSN: 1746-6148