In Brazzaville (Congo), the prevalence of chronic carriage of HBs Ag (7.31%) we observed, is similar to the ones previously reported in 1981, 1982 and 1988. The sero-prevalence of anti-HBc is 67.21%. Anti-HBc are considered to be very relevant for the screening of VHB infection. Our study clearly points out that the highest prevalence of HBs Ag was observed among midwives. In all, the frequency distribution of the two serological markers we studied was similar in health workers and general population.
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