1.

NPV: non‐protected vaccinees (with anti‐HBs less than 10 mIU/mL) AIR: anamnestic immune response * Positive: number with anti‐HBs at or above 10 mIU/mL ** Negative: number with anti‐HBs below 10 mIU/mL

NPV: non‐protected vaccinees (with anti‐HBs less than 10 mIU/mL) AIR: anamnestic immune response * Positive: number with anti‐HBs at or above 10 mIU/mL ** Negative: number with anti‐HBs below 10 mIU/mL