"Antibody Persistence and Immunological Memory at Age 4 Years After Meningococcal Group C Conjugate Vaccination in Children in the United Kingdom"
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"Antibody Persistence and Immunological Memory
at Age 4 Years After Meningococcal Group C Conjugate Vaccination in Children in
the United Kingdom" Journal of Infectious Diseases (www.journals.uchicago.edu/JID/home.html)
(11/01/2002)
Vol. 186, No. 9, P. 1353; Borrow, Ray; Goldblatt, David; Andrews, Nick
Children were primed with two different
formulations of a meningococcal group C conjugate vaccine, with either 2
micrograms or 10 micrograms of meningococcal C polysaccharide at two months,
three months, and four months of age. In order to determine the antibody
persistence and immunological priming of the formulations, the children were
administered booster vaccines between the ages of 13 months and 16 months and
again at four years with 10 micrograms of unconjugated meningococcal C
polysaccharide. At four years, tests showed that geometric mean titers,
concentrations of meningococcal C-specific immunoglobulin G, and concentrations
of serum bactericidal antibody had dropped to levels seen before vaccination.
One month after the year-four booster, meningococcal C immunoglobulin G and
serum bactericidal antibody levels had risen significantly. The 2-microgram
vaccination provided a greater post-booster reaction than the 10-microgram
vaccination, the researchers said.
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