| the prevalence of hepatitis b viral markers in bloemfontein anaesthetists. | a study was undertaken to determine whether the 48 anaesthetists in bloemfontein have a higher rate of exposure to hepatitis b virus than comparable groups and whether active immunisation with hepatitis b surface antigen is necessary. hepatitis b markers were detected by radio-immunoassay and the results analysed statistically. hepatitis b markers were found in the sera of 36.17% of the anaesthetists and they had an 8-9 times greater prevalence of markers than employees of the local hospitals. h ... | 1987 | 3576383 |