Monitoring on antibody levels of pertussis, diphtheria and tetanus in healthy population of Shaoguan

Objective This study was intended to understand the status of immunization against pertussis，diphtheria and tecanus in healthy population and provide a timely seiemitic basis for immuniza- tion strategy. Methods A number of healthy people aged between 0-40 were randomly selected to un-dergo monitoring antibody levels of pertussis,diphtheria and tetanus. Results The geometric mean titer (GMT) and rate of protection for pertussis antibody were 1:374.2 and 67.74％，respectively；GMT of diphtheria and tetanus antitoxin was 0.1699IU／ml and 0.1804IU／ml，with a positive rate of 88.94％ and 91.83％，respectively. Conclusion A good immunological barrier against pertussis，diphtheria and tetanos has formed，but the antibody level of pertussis among people is a little lower, therefore we should strongly extend the use of Adsorbed Diphtheria，Tetanus and Acellular Pertussis Combined Vaccine.