TABLE 3

The Frequency of Horizontal and Mother-to-Infant Transmission of HBV and the Incidence of HBVMN in the Long-term Follow-up HBsAg-Carrier Children

Group (Birth Cohort)TotalHorizontal Transmission, n (%)aMother-to-Infant Transmission, n (%)aHBVMN, n (%)b
Prevaccination period348127 (36.5)221 (63.5)9 (2.6)
Postvaccination period1407 (5.0)133 (95.0)0 (0.0)
  • a χ2 test: P < .05.

  • b Fisher's exact test: P < .05.