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  1. Reduced response to multiple vaccines sharing common protein epitopes that are administered simultaneously to infants.

    Article - En anglais

    The plethora of newly discovered vaccines implies that, in the future, many vaccines will have to be administered simultaneously to infants.

    We examined the potential interference with the immune response of several coadministered vaccines containing the same protein component, namely, tetanus toxoid (TT).

    Infants simultaneously receiving a tetravalent pneumococcal vaccine conjugated to TT (PncT) and a diphtheria-tetanus-pertussis-poliovirus-Haemophilus influenzae type b-tetanus conjugate vaccine showed significantly lower anti-H. influenzae type b polysaccharide (polyribosylribitol phosphate [PRP]) antibody concentrations than those receiving either a tetravalent pneumococcal vaccine conjugated to diphtheria toxoid or placebo.

    A dose range study showed that anti-PRP antibody concentrations were inversely related to the TT content of the PncT vaccines administered in infancy.

    Postimmunization antitetanus antibody concentrations were also affected adversely as the TT content of the coadministered vaccines was increased.

    This phenomenon, which we believe derives from interference by a common protein carrier, should be taken into account when the introduction of an immunization program including multiple conjugate vaccines is considered.

    Mots-clés Pascal : Vaccin polyvalent, Interférence, Réponse immune, Immunité humorale, Communauté antigénique, Déterminant antigénique, Glycoconjugué, Protéine transport, Tétanos, Bactériose, Infection, Diphtérie, Haemophilus influenzae, Pasteurellaceae, Bactérie, Nourrisson, Homme

    Mots-clés Pascal anglais : Polyvalent vaccine, Interference, Immune response, Humoral immunity, Common antigen, Antigenic determinant, Glycoconjugate, Carrier protein, Tetanus, Bacteriosis, Infection, Diphtheria, Haemophilus influenzae, Pasteurellaceae, Bacteria, Infant, Human

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 98-0291847

    Code Inist : 002A05F04. Création : 27/11/1998.