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Route of injection.
| Groups | Vaccines Injected | Dose | Challenge Virus | Route of Injection | |
|---|---|---|---|---|---|
| G1 | 5 pigs/each | Ingelvac PRRS MLV | 2 mL/piglet | (QH-08 at (2 × 106 TCID50) 2 mL/piglet | Intramuscularly |
| G2 | CH-1α | 2 mL/piglet | |||
| G3 | JXA1 | 2 mL/piglet | |||
| G4 | JXA1-R MLV | 2 mL/piglet | |||
| infected control | 3 pigs/each | No vaccine | PBS-2 mL/piglet | ||
| non-infected control | PBS-2 mL/piglet | ||||
