Immune modulation after measles vaccination of 6-9 months old Bangladeshi infants


Schnorr, JJ; Cutts, FT; Wheeler, JG; Akramuzzaman, SM; Alam, MS; Azim, T; Schneider-Schaulies, S; Ter-Meulen, V; (2001) Immune modulation after measles vaccination of 6-9 months old Bangladeshi infants. Vaccine, 19 (11-12). pp. 1503-10. ISSN 0264-410X

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Abstract

Measles still causes high mortality in children younger than 1 year of age. Administration of high titre measles vaccines before 7 months of age led to increased overall mortality, raising questions as to the immunological effects of measles vaccine in young infants. We investigated the immune response to standard titre vaccines given to children in Bangladesh in a single dose at age 9 months, or two doses at 6 and 9 months. Of the children vaccinated at age 9 months, 95% serocoverted, compared with 70% at age 6 months. Delayed-type-hypersensitivity reactions to candida antigen were significantly reduced in both vaccine groups at 6 weeks post-vaccination, but responses to other recall antigens studied were not significantly different from controls. In both vaccine groups, peripheral blood lymphocytes isolated at 6 and 24 weeks after vaccination showed significantly higher expression of activation markers upon in vitro stimulation, and a sustained increase in IL-2 production. These findings suggest prolonged immune activation after measles vaccination at the same time as some reduction in delayed hypersensitivity responses. Further study of the clinical effects of these changes is warranted.

Item Type: Article
Keywords: measles vaccination, lymphocyte activation, cytokines, Edmonston-zagreb vaccine, medium-titer, mortality, responses, virus, age, immunization, induction, infection, standard, Antibodies, Viral, blood, Bangladesh, Cytokines, biosynthesis, Female, Human, Hypersensitivity, Delayed, Immunization Schedule, In Vitro, Infant, Interleukin-2, biosynthesis, Lymphocyte Activation, Male, Measles Vaccine, administration & dosage, immunology, Measles virus, immunology, Support, Non-U.S. Gov't
Faculty and Department: Faculty of Epidemiology and Population Health > Dept of Infectious Disease Epidemiology
PubMed ID: 11163674
Web of Science ID: 166517000022
URI: http://researchonline.lshtm.ac.uk/id/eprint/16894

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