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Hepatitis B vaccination awareness and biological risk
A Trevisan1, M Borella Venturini, P Paruzzolo
1Dipartimento di Medicina Ambientale e Sanità Pubblica, Università di Padova, Via Giustiniani 2, 35128 Padova. andrea.trevisan@unipd.it
Background:
Hepatitis B virus is a possible risk in persons exposed to biological risk at work. Vaccination is the only prevention against infection.
Objectives:
A population of 1,408 employees of the University of Padua was investigated to define the immunological status for HBV and degree of awareness to hepatitis B vaccination.
Methods:
The subjects were subdivided according to sex, age (< or = 40 or > 40 years old), level of education (college graduates or lower), and the extent of biological risk (no risk, low or high risk). Clinical history questionnaires were used and measurement of hepatitis B markers was carried out.
Results:
The results showed that only 30.5% of the subjects had been vaccinated; among these, 90.2% showed a measurable level of anti-HBs antibodies, 8.2% showed anti-HBs antibodies lower than 10 IU/L, and 1.6% showed positive markers of previous infection. However, among non-vaccinated subjects 13.4% were positive for previous infection; in all subjects, prevalence of hepatitis B virus infection was 9.8%. The awareness to hepatitis B vaccination was altogether very low (30.5%), but females (44.2%), subjects less than 40 years of age (43.5%), college graduates (34.1%), and high risk exposed personnel (57.7%) were more likely to comply compared to male subjects (odds ratio 2.53), subjects more than 40 years of age (odds ratio 3.57), non-college graduates (odds ratio 1.65), or low risk exposed (odds ratio 13.42).
Conclusions:
The variables considered appeared to influence awareness to vaccination. Owing to low awareness, an information campaign was started and 90% of the invited subjects were immunized.