title: The immunological response of Thai infants to haemophilus influenzae type B polysaccharide-tetanus conjugate vaccine co-administered in the same syringe with locally produced diphtheria-tetanus-pertussis vaccine.
abstract: OBJECTIVE
  Comparing the immunogenicity and reactogenicity of three vaccine combinations. These were GlaxoSmithKline Biologicals' (GSK) Haemophilus influenzae type b vaccine (Hib-TT, Hiberix) administered with the local Government Pharmaceutical Organization's (GPO) diphtheria-tetanus-pertussis whole cell (DTPw) vaccine, Hib-TT mixed with GPO's DTPw vaccine, or Hib-IT mixed with GSKs' DTPw vaccine (Tritanrix).
  
  
  METHODS
  An open, randomized, controlled, single center study of three hundred and sixty infants. They were randomized into three groups to receive either Hib-TT Hiberix mix with GPOs' DTPw vaccine (group 1), Hib-TT mixed with GPO's DTPw vaccine (group 2), or Hib-TT mixed with GSKs' DTPw vaccine (Tritanrix; group 3) at two, four and six months of age.
  
  
  RESULTS
  One month after the third dose, all subjects had antibodies level against Hib polyribosylribitol phosphate (PRP) > or = 0.15 microg/ml. All 11 subjects except two (in group 2) had anti-PRP levels > or = 1.0 microg/ml. The geometric mean concentrations were similar in all three groups. Over 96% of the subjects in all three groups demonstrated an immunological response to diphtheria, tetanus, and pertussis antigens. There was no diference among the three groups in terms of severe local reaction and fever.
  
  
  CONCLUSIONS
  The present study showed that the combined vaccines produced an effective antibody response with no increase in reactogenicity compared to separately administrated vaccines.
authors: Infectious Diseases Unit, Department of Pediatrics, Phramongkutklao Hospital, Bangkok, Thailand. akpmk@yahoo.com
authors: Angkool
authors: A
authors: Kerdpanich
authors: Yanee
authors: Y
authors: Hutagalung
authors: Veerachai
authors: V
authors: Watanaveeradej
authors: Hans L
authors: HL
authors: Bock
authors: Mark
authors: M
authors: Steinhoffmd
mesh_terms: D000907:Antibodies, Bacterial; D015721:Diphtheria-Tetanus-Pertussis Vaccine / Q000008:administration & dosage / Q000276:immunology / Q000494:pharmacology*; D004347:Drug Interactions; D005260:Female; D006192:Haemophilus Infections / Q000276:immunology / Q000517:prevention & control*; D018073:Haemophilus Vaccines / Q000008:administration & dosage / Q000276:immunology / Q000494:pharmacology*; D019741:Haemophilus influenzae type b / Q000276:immunology*; D006801:Humans; D007223:Infant; D008297:Male; D013745:Tetanus Toxoid / Q000008:administration & dosage / Q000276:immunology / Q000494:pharmacology*; D013785:Thailand; D017778:Vaccines, Combined
chemical_list: D000907:Antibodies, Bacterial; D015721:Diphtheria-Tetanus-Pertussis Vaccine; D018073:Haemophilus Vaccines; C055753:Haemophilus influenza type b polysaccharide vaccine-tetanus toxin conjugate; D013745:Tetanus Toxoid; D017778:Vaccines, Combined