Table 1 Association of virulence factors of Escherichia coli isolates from clinical bovine mastitis with clinical signs and persistence of the disease.
From: Association Between Virulence Factors and Clinical Course of Escherichia coli Mastitis
Number of isolates with the virulence factor | ||||||||
|---|---|---|---|---|---|---|---|---|
Type of mastitis | F17 n = 14 | SP1 n = 12 | CNF12 n = 12 | CNF22 n = 23 | AER3 n = 18 | TraT n = 57 | Serum resistant n = 91 | None n = 37 |
Mild n = 78 | 5 | 6 | 6 | 10 | 8 | 25 | 46 | 18 |
Severe n = 77 | 9 | 6 | 6 | 13 | 10 | 32 | 45 | 19 |
Persistent n = 16 | 1 | 6 | 6 | 6 | 1 | 3 | 9 | 2 |
Non-persistent n = 113 | 10 | 4 | 4 | 12 | 14 | 44 | 64 | 31 |
ND4 n = 26 | 3 | 2 | 2 | 5 | 3 | 10 | 18 | 4 |