PURPOSE: We determine the Korean antibody titer and positive rate of tetanus by using a with qualitative test (ELISA) and a quantitative test (TQS(R)). METHODS: This study was prospective collecting study with uncontolled patients who were admitted in 21 Emergency Departments during 3 months in South Korea. We measured TQS(R) and collected the serum with a centrifuge for 5 groups, which was classified with age: 2~10 years (I), 11~20 years (II), 21~30 years (III), 31~40 years (IV), 41~60 years (V), in each hospital. The freezed serum and the protocol with TQS(R) results were taken at the Soonchunhyang University Bucheon hospital to be analyzed. RESULTS: The number of enrolled patients was 1816 (male 58%). The positive rate of TQS(R) was 835 patients (46%), and there was no relation with region or sex. In sex and age, there was a definitive decline in the group III fort males and females. The results of ELISA was showed that 62.8% (> 0.15 IU/ml) and 52.2% (> 0.2 IU/ml) had protective levels of tetanus antibody. The proportion decreased to approximately 43% and 18% among persons 40~60 years of age at each level of antibody titers. By region and population, there was no statistical relationship with TQS(R) and ELISA, but previous military service was associated with a higher prevalence of protective antibodies to tetanus (p<0.001). CONCLUSIONS: A substantial portion of adults in South Korea do not have antibody levels that are protective against tetanus. Also, the mean level of tetanus antibody titers was definitively lower than those of other developed conturies and consistently decreased with aging. Therefore, an adult formulation diphteria and tetanus toxoid every 5 or 10 years is recommended for all adults between 20 and 60 years of age after being tested with TQS(R) in South Korea.
Adult ; Aging ; Antibodies ; Emergency Service, Hospital ; Enzyme-Linked Immunosorbent Assay ; Epidemiology ; Female ; Gyeonggi-do ; Humans ; Korea ; Male ; Military Personnel ; Prevalence ; Prospective Studies ; Tetanus ; Tetanus Toxoid