Table 2 Detection performance and success rates per session and dog
From: Scent dog identification of SARS-CoV-2 infections in different body fluids
Session | Dog | Detection | SARS-CoV-2 infection status | Total number of right decisions | Total number of sample presentations | Success rate per dog | |
|---|---|---|---|---|---|---|---|
positive | negative | ||||||
Non-inactivated saliva samples (after 1 week of training with inactivated saliva samples) | Dog 1 | Yes | 15 | 5 | 118 | 132 | 89% |
No | 9 | 103 | |||||
Dog 2 | Yes | 14 | 5 | 89 | 95 | 94% | |
No | 1 | 75 | |||||
Dog 3 | Yes | 16 | 5 | 125 | 136 | 92% | |
No | 6 | 109 | |||||
Dog 4 | Yes | 9 | 12 | 64 | 79 | 81% | |
No | 3 | 55 | |||||
Dog 5 | Yes | 16 | 3 | 75 | 81 | 93% | |
No | 3 | 59 | |||||
Dog 6 | Yes | 16 | 5 | 99 | 107 | 93% | |
No | 3 | 83 | |||||
Dog 7 | Yes | 20 | 0 | 110 | 114 | 96% | |
No | 4 | 90 | |||||
Dog 8 | Yes | 17 | 3 | 89 | 92 | 97% | |
No | 0 | 72 | |||||
Dog 9 | Yes | 17 | 4 | 97 | 102 | 95% | |
No | 1 | 80 | |||||
Dog 10 | Yes | 14 | 7 | 113 | 129 | 88% | |
No | 9 | 99 | |||||
All dogs | Yes | 154 | 49 | 979 | 1067 | 92% | |
No | 39 | 825 | |||||
Non-inactivated saliva, urine and sweat samples | Dog 1 | Yes | 18 | 7 | 174 | 191 | 91% |
No | 10 | 156 | |||||
Dog 2 | Yes | 18 | 19 | 161 | 186 | 87% | |
No | 6 | 143 | |||||
Dog 3 | Yes | 20 | 6 | 135 | 150 | 90% | |
No | 9 | 115 | |||||
Dog 4 | Yes | 18 | 12 | 169 | 197 | 86% | |
No | 16 | 151 | |||||
Dog 5 | Yes | 17 | 15 | 164 | 195 | 84% | |
No | 16 | 147 | |||||
Dog 6 | Yes | 19 | 6 | 117 | 127 | 92% | |
No | 4 | 98 | |||||
Dog 7 | Yes | 19 | 1 | 201 | 223 | 90% | |
No | 21 | 182 | |||||
Dog 8 | Yes | 20 | 1 | 112 | 115 | 97% | |
No | 2 | 92 | |||||
Dog 9 | Yes | 18 | 5 | 136 | 147 | 93% | |
No | 6 | 118 | |||||
Dog 10 | Yes | 18 | 8 | 124 | 139 | 89% | |
No | 7 | 106 | |||||
All dogs | Yes | 185 | 80 | 1493 | 1670 | 89% | |
No | 97 | 1308 | |||||
Non-inactivated sweat samples | Dog 1 | Yes | 10 | 0 | 59 | 67 | 88% |
No | 8 | 49 | |||||
Dog 2 | Yes | 10 | 4 | 53 | 57 | 93% | |
No | 0 | 43 | |||||
Dog 3 | Yes | 10 | 5 | 60 | 69 | 87% | |
No | 4 | 50 | |||||
Dog 4 | Yes | 10 | 3 | 59 | 62 | 95% | |
No | 0 | 49 | |||||
Dog 5 | Yes | 10 | 7 | 60 | 71 | 85% | |
No | 4 | 50 | |||||
Dog 6 | Yes | 10 | 4 | 57 | 65 | 88% | |
No | 4 | 47 | |||||
Dog 7 | Yes | 10 | 1 | 42 | 44 | 95% | |
No | 1 | 32 | |||||
Dog 8 | Yes | 10 | 1 | 54 | 56 | 96% | |
No | 1 | 44 | |||||
Dog 9 | Yes | 10 | 1 | 38 | 40 | 95% | |
No | 1 | 28 | |||||
All dogs | Yes | 90 | 26 | 482 | 531 | 91% | |
No | 23 | 392 | |||||
Non-inactivated urine samples | Dog 1 | Yes | 10 | 1 | 80 | 91 | 88% |
No | 10 | 70 | |||||
Dog 2 | Yes | 10 | 2 | 47 | 50 | 94% | |
No | 1 | 37 | |||||
Dog 3 | Yes | 10 | 1 | 59 | 63 | 94% | |
No | 3 | 49 | |||||
Dog 4 | Yes | 8 | 1 | 67 | 72 | 93% | |
No | 4 | 59 | |||||
Dog 5 | Yes | 10 | 2 | 47 | 49 | 96% | |
No | 0 | 37 | |||||
Dog 6 | Yes | 10 | 2 | 64 | 66 | 97% | |
No | 0 | 54 | |||||
Dog 7 | Yes | 10 | 0 | 40 | 41 | 98% | |
No | 1 | 30 | |||||
Dog 8 | Yes | 10 | 0 | 47 | 47 | 100% | |
No | 0 | 37 | |||||
Dog 9 | Yes | 10 | 0 | 49 | 49 | 100% | |
No | 0 | 39 | |||||
Dog 10 | Yes | 10 | 4 | 62 | 66 | 94% | |
No | 0 | 52 | |||||
All dogs | Yes | 98 | 13 | 562 | 594 | 95% | |
No | 19 | 464 | |||||
Non-inactivated saliva samples | Dog 1 | Yes | 19 | 1 | 143 | 147 | 97% |
No | 3 | 124 | |||||
Dog 2 | Yes | 20 | 5 | 117 | 128 | 91% | |
No | 6 | 97 | |||||
Dog 3 | Yes | 20 | 7 | 159 | 173 | 92% | |
No | 7 | 139 | |||||
Dog 4 | Yes | 20 | 4 | 131 | 137 | 96% | |
No | 2 | 111 | |||||
Dog 5 | Yes | 20 | 5 | 114 | 120 | 95% | |
No | 1 | 94 | |||||
Dog 6 | Yes | 20 | 4 | 105 | 111 | 95% | |
No | 2 | 85 | |||||
Dog 7 | Yes | 18 | 8 | 145 | 163 | 89% | |
No | 10 | 127 | |||||
Dog 8 | Yes | 20 | 6 | 149 | 164 | 91% | |
No | 9 | 129 | |||||
Dog 9 | Yes | 20 | 1 | 110 | 112 | 98% | |
No | 1 | 90 | |||||
Dog 10 | Yes | 19 | 5 | 174 | 191 | 91% | |
No | 12 | 155 | |||||
All dogs | Yes | 196 | 46 | 1347 | 1446 | 93% | |
No | 53 | 1151 | |||||
All sessions | Dog 1 | Yes | 72 | 14 | 574 | 628 | 91% |
No | 40 | 502 | |||||
Dog 2 | Yes | 72 | 35 | 467 | 516 | 91% | |
No | 14 | 395 | |||||
Dog 3 | Yes | 76 | 24 | 538 | 591 | 91% | |
No | 29 | 462 | |||||
Dog 4 | Yes | 65 | 32 | 490 | 547 | 90% | |
No | 25 | 425 | |||||
Dog 5 | Yes | 73 | 32 | 460 | 516 | 89% | |
No | 24 | 387 | |||||
Dog 6 | Yes | 75 | 21 | 442 | 476 | 93% | |
No | 13 | 367 | |||||
Dog 7 | Yes | 77 | 10 | 538 | 585 | 92% | |
No | 37 | 461 | |||||
Dog 8 | Yes | 77 | 11 | 451 | 474 | 95% | |
No | 12 | 374 | |||||
Dog 9 | Yes | 75 | 11 | 430 | 450 | 96% | |
No | 9 | 355 | |||||
Dog 10 | Yes | 61 | 24 | 473 | 525 | 90% | |
No | 28 | 412 | |||||
All dogs | Yes | 723 | 214 | 4863 | 5308 | 92% | |
No | 231 | 4140 | |||||