Table 1.
General characteristics of the datasets on microorganisms identified using MALDI-TOF from apparently healthy bovine lactating quarters.
| Study | Country | No. Herds | No. Milk Samples | No. Contaminated Samples (% of Total Samples) | No. Included Samples a | No. Samples with No Growth (% of Included Samples) |
|---|---|---|---|---|---|---|
| Kurban et al. (personal communication) | Canada | 5 | 16,462 | 935 (5.7) | 15,527 | 8935 (57.5) |
| Kabera et al., 2020 [27] | Canada | 9 | 6215 | 140 (2.3) | 6,075 | 4593 (75.6) |
| Wattenburger et al., 2020 [28] | US | 1 | 653 | 259 (39.7) | 394 | 188 (47.7) |
| Rowe et al., 2019 [29] | US | 78 | 11,560 | 1112 (9.6) | 10,448 | 8249 (79.0) |
| Rowe et al., 2020 [30] | US | 7 | 10,200 | 462 (4.5) | 9738 | 6376 (65.5) |
| Rowe et al., 2020 [31] | US | 5 | 6525 | 165 (2.5) | 6360 | 4796 (75.4) |
| Middleton (personal communication) | US | 1 | 233 | 6 (2.6) | 227 | 189 (83.3) |
| Ankney et al., 2020 [32] | US | 1 | 147 | 11 (7.5) | 136 | 84 (61.8) |
| Ankney et al., 2020 [32] | US | 1 | 629 | 55 (8.7) | 574 | 380 (66.2) |
| Garcia et al., 2021 [33] | Brazil | 5 | 1060 | 110 (10.4) | 950 | 625 (65.8) |
| Total | 113 | 53,684 | 3255 (6.1) | 50,429 | 34,415 (68.2) |
a Number of samples after exclusion of contaminated (uninformative) samples.