[Seroprevalence of viral markers of hepatitis B among health professionals. Multicenter study in Mexico].

To determine the prevalence of serological markers for hepatitis B infection among health care workers (HCW) in Mexico we surveyed 1072 volunteers from 26 hospitals in 12 states, from which only 1017 fulfilled the inclusion criteria: 82 patients (8.1%) were excluded because of lipemic and/or hemolyzed serum, leaving 935 persons in the study. The study population consisted of physicians, nurses, laboratory chemists, health laboratory technicians and odontologists.