Immunization with a recombinant subunit OspA vaccine markedly impacts the rate of newly acquired Borrelia burgdorferi infections in client-owned dogs living in a coastal community in Maine, USA

Table 1 Tabulation of yearly testing results for antibodies directed against C6 antigen of Borrelia burgdorferi in dogs utilizing the SNAP® 3Dx® or 4Dx® test kit

	2009	2010	2011	2012	2013	Cumulative
SNAP tests utilized	1391	1346	1266	1127	1072	6202
SNAP B. burgdorferi-infection positive results	170	208	156	154	147	835
Old POS (+)	88	103	85	75	81	432
New POS (+)	82	105	71	79	66	403
Vaccine compliance status of tested dogs
Fully vaccinated dogs tested	970	1053	933	833	762	4551
New POS (+)	11	11	10	11	3	46
Negative (−)	959	1042	923	822	759	4505
Incompletely vaccinated dogs tested (also includes non-vaccinated)	421	293	333	294	310	1651
Total new (+): (includes dogs with unknown vaccine status)*	71	94	61	68	63	357
New POS (+) among NON-vaccinated	56	76	55	55	49	291
New POS (+) among partially vaccinated	15	18	6	13	14	66
Negative (−)	350	199	272	226	247	1294

*Dogs with unknown vaccine status grouped (conservatively) with ‘Incompletely Vaccinated Group’: 2009 (12); 2010 (11), 2011 (0), 2012 (0), 2013 (1).

ISSN: 1756-3305