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Table 2 HBV serology in infants, school pupils and pregnant women according to location

From: Hepatitis B virus in the Lao People’s Democratic Republic: a cross sectional serosurvey in different cohorts

  Infants N (%) Pre-school children N (%) School pupils N (%) Pregnant women N (%)
  VTN LPB Total Huaphan LPB BLX SVN Total VTN LPB Total
anti-HBs- anti-HBc- 23 (24.5) 31 (31.6) 54 (28.1) 86 (65.1) 318 (53.4) 358 (63.9) 369 (69.2) 1045 (61.9) 98 (51.9) 69 (34.7) 167 (43.0)
anti-HBs + anti-HBc - 61 (64.9) 54 (55.1) 115 (59.9) 18 (13.6) 131 (22.0) 108 (19.3) 58 (10.9) 297 (17.6) 6 (3.2) 23 (11.6) 29 (7.5)
anti-HBs– anti-HBc + 7 (7.5) 5 (5.1) 12 (6.3) 13 (9.9) 61 (10.2) 57 (10.2) 75 (14.1) 193 (11.4) 30 (15.9) 46 (23.1) 76 (19.6)
anti-HBs + anti-HBc+ 3 (3.2) 8 (8.2) 11 (5.7) 15 (11.4) 86 (14.4) 37 (6.6) 31 (5.8) 154 (9.1) 55 (29.1) 61 (30.7) 116 (29.9)
HBsAg + * 1 (1.1) 0 1 (0.5) 6 (4.5) 50 (8.4) 20 (3.6) 63 (11.8) 133 (7.9) 18 (9.5) 14 (7.0) 32 (8.2)
Total 94 98 192 132 596 560 533 1689 189 199 388
  1. *only tested on anti-HBs negative - anti-HBc positive samples.
  2. Abbreviations used: VTN Vientiane, LPB Luang Prabang, BLX Bolikhamxai and SVN Savannaket.