Evaluation of Tetanus Seropositivity in Healthcare Professionals by Age and Occupational Groups

Objective: Our country has limited data on protective antibody levels following primary tetanus immunization. In this study, we planned to evaluate the tetanus antibody seroprevalence of healthcare workers in our hospital according to age and occupational groups. Methods: Tetanus antibody levels were determined by the enzyme-linked immunosorbent assay (ELISA) method. Antibody results were obtained through the hospital operating system, and the tetanus antibody level ≥0.5 IU/mL was considered seropositive. Results: 77.5% of 2082 healthcare workers were seropositive. According to age groups, the highest seropositivity was between 20-29; the lowest seropositivity was found in individuals over 50 years of age and over (66.3%). We determined that tetanus antibody protection decreased with age (p=0.03). There was no difference between tetanus seropositivity according to occupational groups. Conclusion: Antibody levels of tetanus decrease with age, and protection decreases significantly, especially over 50 years of age. It is important to apply a booster dose every ten years following the primary vaccine schedule in tetanus immunization.