- pv post vaccination, pb post booster, 2nd pb second post booster
- *ELISA is expressed as Percentage Inhibition (PI %) and Cut-off value for ELISA is ≥50% shown in green color
- **VNT results are expressed as log 10 and titer ≥1 is shown in green color
- Note: VNT was performed against respective serotype used in the vaccine