Immunogenicity of Haemophilus influenzae type B vaccines in children with hepatoportoenterostomies.
To assess the immunogenicity of HIB vaccines in patients in whom hepatoportoenterostomies were performed for biliary atresia, eight such children received Haemophilus influenzae type b-polyribosylribitol phosphate (HIB-PRP) vaccine and had pre- and postvaccination total serum anti-PRP antibody concentrations determined by radioimmunoassay. Preimmunization anti-PRP antibody levels ranged from less than 0.125 to 0.40 microgram/ml [geometric mean antibody titer (GMT) 0.106 microgram/ml], while postvaccination levels ranged from 0.161 to 1.192 micrograms/ml (GMT = 0.489 microgram/ml). Five children who did not achieve postimmunization anti-PRP antibody levels greater than 1.0 microgram/ml received 15 micrograms of either PRP coupled to diphtheria toxoid (PRP-D) or PRP coupled to an outer membrane protein complex of Neisseria meningitidis group B (PRP-NOMP) conjugate vaccine. Anti-PRP antibody levels 1 month after immunization with HIB conjugate vaccines ranged from 1.51 to 10.35 micrograms/ml (GMT = 3.386 micrograms/ml). Patients with extrahepatic biliary atresia and hepatoportoenterostomies who previously received the HIB-PRP vaccine should be revaccinated with PRP protein conjugate vaccines to ensure adequate protection against H. influenzae type b disease.
Department of Pediatrics, University of Southern California School of Medicine, Los Angeles.
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P
Rosenthal
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V
Wong
L A
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Ross
K S
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Kim
D000917:Antibody Formation; D016667:Bacterial Capsules; D001428:Bacterial Vaccines / Q000276:immunology*; D001656:Biliary Atresia / Q000601:surgery*; D002675:Child, Preschool; D004168:Diphtheria Toxoid / Q000276:immunology; D006192:Haemophilus Infections / Q000517:prevention & control*; D018073:Haemophilus Vaccines; D006193:Haemophilus influenzae / Q000276:immunology*; D006801:Humans; D007114:Immunization; D007223:Infant; D011135:Polysaccharides, Bacterial / Q000276:immunology*; D011171:Portoenterostomy, Hepatic
D001428:Bacterial Vaccines; D004168:Diphtheria Toxoid; D018073:Haemophilus Vaccines; C044237:Haemophilus influenzae type b polysaccharide vaccine; C052180:Haemophilus influenzae type b-polysaccharide vaccine-diphtheria toxoid conjugate; D011135:Polysaccharides, Bacterial