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Table 3 New mastitis infection rates from two herds (A, B) and for two pre-milking teat disinfection treatments (PTD: that received pre-milking teat disinfectant and NPTD: did not receive disinfectant) and bacterial species identified from those infections

From: Effect of pre-milking teat disinfection on new mastitis infection rates of dairy cows

Herd A B
  PTD NPTD PTD NPTD
Clinical 10 12 8 14
†Sub-clinical 9 6 9 8
Total infections 19 18 17 22
Clinical Subclinical
Bacteria PTD NPTD PTD NPTD
Not detected 9 10 0 0
Staphylococcus aureus 6 15 16 10
Streptococcus uberis 3 1 2 3
Streptococcus dysgalactiae 0 0 0 1
  1. † Quarter milk samples with an SCC ≥500 × 103 cells/mL with a pathogen present