@article{2986778, title = "Sero epidemiology of Bordetella pertussis Immune Responses in a Healthy Population in Northern Greece", author = "Polyzou, A. and Pournaras, S. and Dafni, U. and Sofianou, D. and Christeli, E. and Patrinos, S. and Tsakris, A.", journal = "Journal of Clinical Laboratory Analysis", year = "2004", volume = "18", number = "3", pages = "211-214", issn = "0887-8013, 1098-2825", doi = "10.1002/jcla.20025", keywords = "hemagglutinin; pertussis toxin, adolescent; adult; aged; antibody blood level; article; Bordetella pertussis; child; Greece; health program; human; immune response; immunization; infant; newborn; normal human; pertussis; population research; seroepidemiology, Adhesins, Bacterial; Adolescent; Adult; Age Distribution; Aged; Aged, 80 and over; Antibodies, Bacterial; Antigens, Bacterial; Bordetella pertussis; Child; Child, Preschool; Greece; Hemagglutinins; Humans; Immunoglobulin G; Infant; Infant, Newborn; Middle Aged; Pertussis Toxin; Retrospective Studies; Seroepidemiologic Studies; Virulence Factors, Bordetella; Whooping Cough, Bordetella; Bordetella pertussis", abstract = "A seroepidemiological study was conducted on a representative sample of the northern Greek population (healthy individuals, age range= 1 day to 80 years) to assess the prevalence of antibodies to pertussis toxin (PT) and filamentous hemagglutinin (FHA). Antibody concentrations were significantly elevated with age (analysis of variance (ANOVA), P<0.001). In addition, a significant increase in antibody levels was detected in subjects >50 years old compared to children aged 5-10 years (post-hoc Scheffe analysis, P=0.007). These data suggest that pertussis occurs frequently in Greek adults, and that sometimes a fifth booster vaccine dose is not given after the second year of life. Routine revaccination with the acellular vaccine for children >4 years of age, adolescents, and adults should be considered in order to ensure effective protection of the whole population. © 2004 Wiley-Liss, Inc." }