Diphtheria, tetanus and poliovirus antibody persistence 5 years after vaccination of pre-schoolers with two different diphtheria, tetanus and inactivated poliomyelitis vaccines (Td-IPV or DT-IPV) and immune responses to a booster dose of DTaP-IPV

• Published in: Vaccine 2015-07, Vol.33 (32), p.3988-3996
• Main Authors: Gajdos, Vincent, Vidor, Emmanuel, Richard, Patrick, Tran, Clément, Sadorge, Christine
• Format: Article
• Language: English
• Subjects: Adolescent; Age; Allergy and Immunology; Antibodies, Bacterial - blood; Antibodies, Viral - blood; Antibody persistence; Antigens; Booster response; Child; Child development; Child, Preschool; Confidence intervals; Diphtheria; Diphtheria-Tetanus Vaccine - administration & dosage; Diphtheria-Tetanus Vaccine - adverse effects; Diphtheria-Tetanus Vaccine - immunology; Drug-Related Side Effects and Adverse Reactions - epidemiology; DT-IPV; DTaP-IPV; Enterovirus; Enzymes; Female; Follow-Up Studies; France; Humans; Immune response; Immunization, Secondary; Injections, Intramuscular; Male; Picornaviridae; Poliomyelitis; Poliovirus; Poliovirus Vaccine, Inactivated - administration & dosage; Poliovirus Vaccine, Inactivated - adverse effects; Poliovirus Vaccine, Inactivated - immunology; Public health; Safety; Td-IPV; Teenagers; Tetanus; Treatment Outcome; Vaccines; Whooping cough
• ISSN: 0264-410X; 1873-2518
• DOI: 10.1016/j.vaccine.2015.06.036

Abstract Introduction This follow-up study assessed the 5-year persistence of vaccine-induced antibodies (Td-IPV or DT-IPV) and the immune response to a booster dose of DTaP-IPV. Methods This was an open-label, parallel-group (two arms), multicentre trial performed at 44 study sites in France. Children aged 11–13 years, of either sex, who received Td-IPV (Revaxis® ) and DT-IPV (DT Polio® ) vaccines at 6 years of age in one previous open-label trial with no further vaccination against diphtheria, tetanus, pertussis or poliomyelitis, were enrolled. All participants received a single intramuscular booster dose (0.5 mL) of DTaP-IPV vaccine (Tetravac-Acellulaire® ). Study endpoints were based on antibody persistence and post-booster immune responses. Safety was monitored throughout the study. Descriptive statistics were used for all analyses. Results Of the 758 children included in the previous study, 274 were included in this follow-up study; 129 had previously been vaccinated with Td-IPV, and 145 had previously received DT-IPV. At least 96.5% of participants in both groups presented an anti-diphtheria and anti-tetanus concentration ≥0.01 IU/mL, and anti-poliovirus types 1–3 titres ≥ 8 (1/dilution). Following vaccination with DTaP-IPV, anti-diphtheria and anti-tetanus antibody concentrations ≥0.1 IU/mL and anti-poliovirus types 1–3 antibody titres ≥8 (1/dilution) were achieved in all participants. DTaP-IPV was well tolerated in this study. There were no serious adverse events during the study, and no participant withdrew because of adverse events. Discussion The present study confirmed the long-term immunity conferred by Td-IPV when given as a booster dose, and supports the use of Td-IPV as a second booster at 6 years of age in children previously vaccinated against diphtheria, tetanus and poliomyelitis types 1–3.