期刊
JOURNAL OF INFECTIOUS DISEASES
卷 181, 期 3, 页码 1162-1166出版社
UNIV CHICAGO PRESS
DOI: 10.1086/315307
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资金
- EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH &HUMAN DEVELOPMENT [T32HD007488] Funding Source: NIH RePORTER
- NICHD NIH HHS [5T32HD0748802] Funding Source: Medline
Children with sickle cell disease were immunized with either 2 doses of 7-valent pneumococcal conjugate vaccine followed by 1 dose of 23-valent pneumococcal polysaccharide vaccine or a single dose of 23-valent vaccine. Functional antibodies to 7 vaccine serotypes were measured by a flow cytometric opsonophagocytic assay (OPA) and compared with IgG anticapsular polysaccharide antibody concentrations measured by ELISA, Moderate correlations were found between OPA and ELISA antibody titers for all 7 serotypes (r values, 0.41-0.70; P<.001 for all serotypes). After immunization with 23-valent vaccine, geometric mean antibody titers by OPA were significantly higher in the combined schedule group for 5 of 7 vaccine serotypes but were significantly higher for only 2 of 7 serotypes as measured by ELISA, The ability of OPA to show a greater differential response to the 2 immunization schedules used in this study suggests that it may be useful in the evaluation of immunization regimens involving pneumococcal conjugate vaccines.
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