Journal
ARCHIVES OF DISEASE IN CHILDHOOD
Volume 88, Issue 5, Pages 375-378Publisher
BMJ PUBLISHING GROUP
DOI: 10.1136/adc.88.5.375
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Linkage of bacterial capsular polysaccharides to proteins to create conjugate vaccines has had a dramatic impact on the health of children. Although unconjugated polysaccharides are poorly immunogenic in infants and some older children and adults, their covalent coupling with proteins stimulates T cell dependent antigenic recognition that profoundly enhances immunogenicity. In the decade since the introduction and widespread use of Haemophilus influenzae type b polysaccharide conjugate vaccines in the United States, invasive H influenzae infections have become a rarity in childhood.(1) Similarly, the conjugation of polysaccharides of Streptococcus pneumoniae to a derivative of diphtheria toxoid and the addition of pneumococcal conjugate vaccine to infant immunisation schedules carries with it promise for a similar decline in the incidence of invasive pneumococcal disease in paediatric patients(2).
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