Greater antibody responses to an eleven valent mixed carrier diphtheria- or tetanus-conjugated pneumococcal vaccine in Filipino than in Finnish or Israeli infants

Taneli Puumalainen, Ron Dagan, Tomi Wuorimaa, Rose Zeta-Capeding, Marilla Lucero, Jukka Ollgren, Helena Käyhty, Hanna Nohynek

    Research output: Contribution to journalArticlepeer-review

    34 Scopus citations

    Abstract

    Background. Antibody responses to pneumococcal conjugate vaccines may vary when administered in different populations or epidemiologic settings. Understanding the causes and significance of this variation could help to determine the number of doses and timing required for protection against pneumococcal diseases in each country. Methods. This report compares antibody responses to aluminum-adjuvanted and nonadjuvanted mixed carrier 11-valent diphtheria- or tetanus-conjugated pneumococcal vaccine (11PncTD) formulations when given at 6, 10 and 14 weeks and 9 months of age to Filipino infants (n = 51) and at 2, 4, 6 and 12 months of age to Finnish (n = 127) and Israeli (n = 124) infants. The study populations differ in their natural exposure to pneumococcus and risk factors for pneumococcal carriage and disease. Results. Filipino and Israeli infants had slightly but significantly higher prevaccination geometric mean concentration (GMC) of antibodies than did the Finnish infants. After three doses of aluminum-adjuvanted 11-PncTD vaccine, the Filipino infants had 1.8 to 6.7 and 1.5 to 5.0 times higher GMC than the Finnish and Israeli infants, respectively, against pneumococcal serotypes conjugated to tetanus protein. The GMC of serotypes conjugated to diphtheria toxoid was 1.3 to 3.0 and 0.7 to 2.0 times the GMC in Finnish and Israeli infants, respectively. The nonadjuvanted vaccine formulation induced generally lower GMCs. Conclusions. The antibody responses to the tetanus-conjugated polysaccharides were considerably higher in the Filipino than in the Finnish or Israeli infants. This may be a result of several factors including the priming effect of tetanus toxoid given to pregnant women, early pneumococcal nasopharyngeal acquisition and genetic differences among populations.

    Original languageEnglish
    Pages (from-to)141-149
    Number of pages9
    JournalPediatric Infectious Disease Journal
    Volume22
    Issue number2
    DOIs
    StatePublished - 1 Feb 2003

    Keywords

    • Conjugate vaccine
    • Filipino subjects
    • Finnish subjects
    • Immunogenicity
    • Infants
    • Israeli subjects
    • Pneumococcus

    ASJC Scopus subject areas

    • Pediatrics, Perinatology, and Child Health
    • Microbiology (medical)
    • Infectious Diseases

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