Amongst 275 subjects from 63 households with at least one HBsAg positive person, HBsAg rate was significantly higher in those who got injection at least once in the life than others (37.7% versus 18.2% respectively, (p<0.006), with 2.7 fold higher in likelihood of HBsAg (+) (OR (CI95%): 2.73 (1.30 - 5.70)).