if we assume that the prevalence of hbsag in a population reflects the rate of infection with hepatitis b virus interacting with host factors , the results of this study support the hypothesis that infections with type b hepatitis in israel occur mainly during childhood , more frequently among the lower socioeconomic classes , and with a predilection of either the infection or of the chronic carrier state for males and certain ethnic groups .
C0019168
hbsag
C0019163
b hepatitis