Skip Navigation LinksHome > February 2013 - Volume 32 - Issue 2 > Three-year Antibody Persistence and Safety After a Single Do...
Pediatric Infectious Disease Journal:
doi: 10.1097/INF.0b013e3182787bff
Vaccine Reports

Three-year Antibody Persistence and Safety After a Single Dose of Combined Haemophilus influenzae Type b (Hib)–Neisseria meningitidis Serogroup C-tetanus Toxoid Conjugate Vaccine in Hib-primed Toddlers

Booy, Robert MB BS, MSc, MD*; Richmond, Peter MB BS; Nolan, Terry MB BS, PhD; McVernon, Jodie MB BS, PhD; Marshall, Helen MB BS, MPH§; Nissen, Michael MB BS; Reynolds, Graham MD; Ziegler, John B. MD**; Stoney, Tanya MB BS††; Heron, Leon MB ChB, MPH*; Lambert, Stephen MB BS, PhD; Mesaros, Narcisa MD‡‡; Peddiraju, Kavitha MSc§§; Miller, Jacqueline M. MD¶¶

Collapse Box

Abstract

Background: Persistence of seroprotective bactericidal antibody titers is important for long-term protection against meningococcal serogroup C disease in young children. Antibody persistence values were determined in children up to 3 years after vaccination with a single dose of the combined Haemophilus influenzae type b (Hib)–Neisseria meningitidis serogroup C (MenC)-tetanus toxoid (TT) conjugate vaccine (Hib-MenC-TT; www.ClinicalTrials.gov: NCT00326118).

Methods: The children had been randomized at ages 12–18 months to receive either 1 dose of Hib-MenC-TT (Hib-MenC group) or separately administered Hib-TT conjugate vaccine and MenC-CRM197 (MCC) vaccine (Hib plus MCC group). All children had been primed in infancy with a Hib vaccine. Antibodies against MenC were measured by a serum bactericidal assay using rabbit complement (rSBA-MenC) and antibodies against Hib polyribosylribitol phosphate were assessed by enzyme-linked immunosorbent assay.

Results: The rSBA-MenC titers ≥1:8 were demonstrated 3 years after vaccination in 64.2% and 53.2% of participants in the Hib-MenC group and in the Hib plus MCC group, respectively. Antipolyribosylribitol phosphate concentrations ≥0.15 µg/mL persisted in >98% of participants in both groups. The rSBA–MenC geometric mean titers and antipolyribosylribitol phosphate geometric mean concentrations remained higher 3 years after vaccination than before vaccination. No serious adverse events assessed by the investigator as being related to vaccination were reported.

Conclusion: In this antibody persistence study of Hib-primed but MenC-naïve toddlers who received a single dose of Hib-MenC-TT, protective antibody levels against Hib and MenC were maintained in the majority of children 3 years after vaccination.

© 2013 Lippincott Williams & Wilkins, Inc.

Login

Article Tools

Share

Article Level Metrics

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.