Abstract
A rural population in Kenya was studied and a prevalence of HBsAg of 5-0% and an antibody prevalence of 50% in HBsAg in negative subjects has been found; 1-2% of the negative subjects converted to positive over a six-month period. A group of HBsAg positive subjects was compared with a matched group of HBsAg negative controls clinically in liver function tests and past medical history. No statistically significant differences were found between the two groups and neither group had experienced in the past significantly more skin scarification, injections or illness with jaundice. Both ad and ay subtypes occurred in the population. This is an unexpected and important finding, which gives scope for further detailed epidemiological studies in this population.
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