Table 9.
Seasonal relative risk of isolation of major mastitis pathogens between 2008 and 2017 in Ontario, Canada.
| Isolates | Peak/Low ratio | Peak season |
|---|---|---|
| (95% confidence interval) | ||
| Staphylococcus aureus | 1.36 (1.16, 1.59) | Spring |
| Corynebacterium spp. | 1.35 (1, 1.93) | Summer |
| Non-aureus Staphylococci | 2.76 (1.96, 3.89) | Summer |
| Escherichia coli | 3.04 (1.72, 5.38) | Summer |
| Trueperella pyogenes | 1.12 (1, 1.73) | Spring |
| Streptococcus dysgalactiae | 1.38 (1, 2.29) | Spring |
| Fungi | 1.08 (1, 1.68) | Spring |
| Algae (Prototheca spp.) | 2.11 (1.27, 3.49) | Summer |
| Contamination | 21.69 (2.65, 177.68) | Summer |
| No growth | 1.21 (1.12, 1.31) | Summer |