Abstract
During a Haemophilus influenzae type b (Hib)-conjugate vaccine trial, the prevalence and duration of antigenuria after vaccination was studied in 102 Gambian infants aged 51 to 175 days. Urine samples were collected at 0, 1, 3, 7, 14, 21 and 28 days postvaccination and tested for Hib antigen by latex agglutination using Biomérieux and Directigen reagent kits. Biomérieux positive reactions were found in 6 of 247 (2.4%) samples from vaccinated children and in 8 of 199 (4.0%) from nonvaccinated children (chi 2 = 0.47; 1 df; p = 0.5). In contrast, Directigen positive reactions were obtained with 86/242 samples (35.5%) from vaccinated children and from 28/190 (14.7%) from non-vaccinated children (chi 2 = 22.7; 1 df; p < 0.0001). The highest rate of antigenuria was detected in samples collected on Day 7 after vaccination when 24 of 30 (80%) were positive. Antigenuria following vaccination was frequent and may complicate the use of this test as a means of diagnosing invasive Hib disease in vaccinated children.
Publication types
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Clinical Trial
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Randomized Controlled Trial
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, Non-P.H.S.
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Antigens, Bacterial / urine*
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Double-Blind Method
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Female
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Gambia
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Haemophilus Infections / immunology*
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Haemophilus Infections / prevention & control
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Haemophilus Infections / urine
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Haemophilus Vaccines / administration & dosage
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Haemophilus Vaccines / immunology*
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Haemophilus influenzae type b / immunology*
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Humans
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Immunologic Techniques
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Infant
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Infant, Newborn
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Male
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Meningitis, Haemophilus / immunology
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Meningitis, Haemophilus / prevention & control
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Meningitis, Haemophilus / urine
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Reference Values
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Sensitivity and Specificity
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Tetanus Toxoid / administration & dosage
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Tetanus Toxoid / immunology*
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Vaccines, Conjugate / administration & dosage
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Vaccines, Conjugate / immunology*
Substances
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Antigens, Bacterial
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Haemophilus Vaccines
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Haemophilus influenza type b polysaccharide vaccine-tetanus toxin conjugate
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Tetanus Toxoid
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Vaccines, Conjugate