Total Vaccinated Unvaccinated N 446* 252 186 Male: Female 266:180 120:132 146:48 Age in years (mean±SD) 31.37±10.68 32.14±11.03 30.52±10.03 HCW with protective anti-HBsAg titres (>10 mIU/ml) 235 199 36 HCW without protective anti-HBsAg titres (<10 mIU/ml) 203 53 150 P value <0.001

Table 1: Demography and proportion of HCWs having protective antibody titre among those vaccinated and unvaccinated.