TABLE 1.
Results for clinical samples
| Premise | Horse no. | Resulta
|
||||
|---|---|---|---|---|---|---|
| RT-PCR | VI | DFA | Serology
|
|||
| Paired | Acute | |||||
| 1 | 1 | + | + | + | + | − |
| 2 | + | − | − | NA | S | |
| 3 | + | − | − | + | S | |
| 4 | + | − | − | NA | S | |
| 2 | 5 | + | − | − | − | S |
| 6 | + | − | + | + | − | |
| 7 | + | + | + | NA | − | |
| 8 | + | − | − | NA | S | |
| 3 | 9 | + | − | − | NA | S |
| 10 | + | − | + | NA | NA | |
| 4 | 11 | + | − | + | + | − |
| 5 | 12 | + | − | + | + | − |
| 6 | 13 | + | + | + | + | V |
| 7 | 14 | + | + | + | NA | − |
| 8 | 15 | + | + | + | NA | − |
| 16 | + | − | − | NA | S | |
| 9 | 17 | + | − | − | NA | S |
| 18 | + | − | − | NA | S | |
| 10 | 19 | + | − | − | NA | S |
| 20 | + | − | − | NA | V | |
| 21 | + | − | − | NA | S | |
| 11 | 22 | + | − | + | NA | − |
| 23 | + | − | + | NA | − | |
| 12 | 24 | + | − | − | NA | S |
| 13 | 25 | + | + | + | NA | − |
| 26 | + | − | − | NA | NA | |
| 14 | 27 | + | − | − | NA | NA |
| 28 | + | − | − | NA | NA | |
| 15 | 29 | + | − | − | NA | V |
| 30 | + | − | − | NA | V | |
| 16 | 31 | + | − | − | NA | NA |
| 17 | 32 | + | − | + | NA | S |
| 18 | 33 | + | + | + | NA | V |
| 34 | + | + | − | NA | S | |
| 19 | 35 | + | − | − | NA | S |
a
VI, virus isolation; S, suspected exposure to H3N8 equine influenza by natural infection; NA, not available; V, antibodies to H7N7 and H3N8 viruses consistent with vaccination; DFA, Directigen Flu A.