Table 1 Demographic data and seroprevalence of infection with vector-borne pathogens among 3750 dogs from shelters in 19 states in the Eastern United States
| Â | No. of samples | Number of dogs positive (%) | |||
|---|---|---|---|---|---|
Dirofilaria immitis | Anaplasma spp. | Ehrlichia spp. | Borrelia burgdorferi | ||
Total sample | 3750 | 419 (11.2) | 90 (2.4) | 299 (8.0) | 332 (8.9) |
Age group | |||||
 < 1 year old | 492 | 6 (1.2) | 8 (1.6) | 13 (2.6) | 15 (3.0) |
 ≥ 1 year old | 3100 | 405 (13.1) | 75 (2.4) | 283 (9.1) | 305 (9.8) |
 Unknown | 158 | 8 (5.1) | 7 (4.4) | 3 (1.9) | 12 (7.6) |
Sex | |||||
 Female | 1938 | 202 (10.4) | 47 (2.4) | 154 (7.9) | 178 (9.2) |
 Male | 1686 | 213 (12.6) | 39 (2.3) | 143 (8.5) | 145 (8.6) |
 Unknown | 126 | 4 (3.2) | 4 (3.2) | 2 (1.6) | 9 (7.1) |
Intact status | |||||
 Intact | 2163 | 312 (14.4) | 47 (2.2) | 191 (8.8) | 180 (8.3) |
 Not intact | 1274 | 100 (7.8) | 34 (2.7) | 95 (7.5) | 107 (8.4) |
 Unknown | 313 | 7 (2.2) | 9 (2.9) | 13 (4.2) | 45 (14.4) |
AKC breed group | |||||
 Herding | 391 | 42 (10.7) | 14 (3.6) | 37 (9.5) | 40 (10.2) |
 Hound | 503 | 54 (10.7) | 14 (2.8) | 91 (18.1) | 78 (15.5) |
 Non-sporting | 159 | 18 (11.3) | 3 (1.9) | 9 (5.7) | 9 (5.7) |
 Sporting | 466 | 60 (12.9) | 26 (5.6) | 32 (6.9) | 52 (11.2) |
 Terrier | 1185 | 169 (14.3) | 17 (1.4) | 71 (6.0) | 86 (7.3) |
 Toy | 418 | 15 (3.6) | 1 (0.2) | 13 (3.1) | 12 (2.9) |
 Working | 268 | 21 (7.8) | 6 (2.2) | 19 (7.1) | 31 (11.6) |
 Unknown | 360 | 40 (11.1) | 9 (2.5) | 27 (7.5) | 24 (6.7) |
Region/State | |||||
 Northeast | 740 | 12 (1.6) | 42 (5.7) | 34 (4.6) | 143 (19.3) |
  Maine | 189 | 2 (1.1) | 22 (11.6) | 4 (2.1) | 44 (23.3) |
  Maryland | 202 | 10 (5.0) | 2 (1.0) | 29 (14.4) | 39 (19.3) |
  New Hampshire | 37 | 0 (0) | 2 (5.4) | 1 (2.7) | 5 (13.5) |
  New York | 171 | 0 (0) | 14 (8.2) | 0 (0) | 42 (24.6) |
  Pennsylvania | 141 | 0 (0) | 2 (1.4) | 0 (0) | 13 (9.2) |
 Midwest | 974 | 52 (5.3) | 19 (2.0) | 48 (4.9) | 66 (6.8) |
  Kansas | 16 | 0 (0) | 0 (0) | 1 (6.3) | 0 (0) |
  Minnesota | 97 | 3 (3.1) | 11 (11.3) | 3 (3.1) | 28 (28.9) |
  Missouri | 335 | 36 (10.7) | 2 (0.6) | 37 (11.0) | 1 (0.3) |
  North Dakota | 2 | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
  Ohio | 352 | 13 (3.7) | 1 (0.3) | 5 (1.4) | 22 (6.3) |
  Wisconsin | 172 | 0 (0) | 5 (2.9) | 2 (1.2) | 15 (8.7) |
 Southeast | 2036 | 355 (17.4) | 29 (1.4) | 217 (10.7) | 123 (6.0) |
  Florida | 372 | 59 (15.9) | 0 (0) | 18 (4.8) | 3 (0.8) |
  Georgia | 200 | 31(15.5) | 0 (0) | 9 (4.5) | 1 (0.5) |
  Louisiana | 177 | 59 (33.3) | 1 (0.6) | 4 (2.3) | 0 (0) |
  Mississippi | 116 | 35 (30.2)a | 0 (0) | 21 (18.1) | 0 (0) |
  North Carolina | 197 | 56 (28.4) | 0 (0) | 52 (26.4) | 7 (3.6) |
  Oklahoma | 200 | 26 (13.0) | 0 (0) | 18 (9.0) | 0 (0) |
  Tennessee | 382 | 75 (19.6) | 4 (1.0) | 13 (3.4) | 1 (0.3) |
  Virginia | 392 | 14 (3.6) | 24 (6.1) | 82 (20.9) | 111 (28.3) |