Table 2.
Lethality of different doses of isolates on SPF chickens.
| Strain | Mortality rate (death number/total number) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 108 TCID50 | 107 TCID50 | 106 TCID50 | 105 TCID50 | 104 TCID50 | 103 TCID50 | 102 TCID50 | 101 TCID50 | 100 TCID50 | |
| GX2019-010 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 9/10 | 3/10 | 0/10 |
| GX2019-011 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 9/10 | 6/10 | 0/10 | 0/10 |
| GX2019-012 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 7/10 | 0/10 | 0/10 |
| GX2019-013 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 8/10 | 6/10 | 0/10 | 0/10 |
| GX2019-014 | 10/10 | 8/10 | 0/10 | 0/10 | 0/10 | 0/10 | 0/10 | 0/10 | 0/10 |
| GX2019-015 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 7/10 | 4/10 | 0/10 | 0/10 |
| GX2019-016 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 6/10 | 0/10 |
| GX2019-017 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 5/10 | 0/10 |
| GX2019-018 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 10/10 | 9/10 | 4/10 | 0/10 |
| GX2020-019 | 10/10 | 10/10 | 10/10 | 6/10 | 2/10 | 0/10 | 0/10 | 0/10 | 0/10 |