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Asia-Pacific Journal of Public Health
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Prevalence of Hepatitis B Surface Antigen and Antibody among Health Care Employees in Negri Sembilan, Malaysia, 1989

TC Tan, MBBS, MFOM (London)

Department of Community, Occupational & Family Medicine National University of Singapore

M Vadivale, MBBS, MSc (OM)

Ministry of Health, Malaysia

CN Ong, PhD

Department of Community, Occupational & Family Medicine National University of Singapore

This study was based on a hepatitis B screening program conducted in one of the states in Malaysia in 1989. The majority (84.6%) of the 2986 health employees were screened. One quarter (25%) was found to have serological markers for the Hepatitis B Virus (HBV); 2.1% had Hepatitis B surface Antigen (HBsAg) and 22.8% had antibody to the Hepatitis B surface Antigen (anti-HBs). The occurrence of HBsAg was higher in ethnic Chinese (6.3%) compared to Malays (1.8%) and Indians (0.9%), even when analyzed by sex, but not with age, type of institution and geographical locality. The distribution of anti-HBs was higher with ethnic Chinese (41.6%), male sex (27.2%) and age. There was a wide variation of the prevalence of serological markers among occupations and increased relative risks of HBsAg were found among medical assistants (RR 3.2; 95% CI 1.4-9.1) and laboratory staff (RR 3.2; 95% CI 1-8.8), and that of anti-HBs among medical assistants (RR 2.8; 95% CI 1.8-3.7). The variations of HBsAg among occupations by type of institutions was marginal while that of anti-HBs was higher among attendants and mid-wives in hospitals, medical assistants in health departments, and assistant nurses and dentists in dental centers. The patterns of distribution of serological markers of HBV among health staff reflect the situation in the community with high endemicity and resemble specific occupational factors noted in previous studies in the West.

Key Words: Anti-HBs • HBsAg • health care worker • Malaysia • occupation.

Asia-Pacific Journal of Public Health, Vol. 6, No. 3, 134-139 (1992)
DOI: 10.1177/101053959200600303
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