This study was designed in order to find out the prevalence of HBV markers amongst pregnant women of middle and high socio-economic class in Sierra Leone. The aim was to determine the necessity and likely benefits of a scheme aimed at the vaccination of children of seropositive mothers who can afford the cost until mass immunisation is possible. A total of 302 women were studied. The seroprevalence rate formed in this study population was 6.2%. The proposed intervention would markedly reduce the HBV status in Sierra Leone, taking into account the high prevalent rate amongst this group. The low anti-HBs found in this population was suprisingly (5.1%); considering the high degree of antigenemia, this should be a subject for future research.