Study of pertussis vaccines in infants: comparison of response to acellular pertussis DTP vaccines containing 25 micrograms of FHA and either 25 or 8 micrograms of PT with response to whole-cell pertussis DTP vaccine.
Clinical and serological responses of infants to primary vaccination with diphtheria-tetanus-acellular pertussis (DTPa) vaccines containing 25 micrograms of filamentous haemagglutinin (FHA) and either 25 or 8 micrograms of pertussis toxoid (PT) were compared in a double-blind randomized study with responses of infants receiving whole-cell pertussis DTP vaccine (DTPw). In total, 308 healthy infants were enrolled to receive three vaccine doses at 3, 4 and 5 months of age. DTPa recipients had significantly lower incidences of local reactions and fever than the DTPw recipients. No differences in reactogenicity were observed between DTPa groups receiving 8 and 25 micrograms doses of PT. After vaccination, an immune response to PT was seen in 96% of 25 micrograms PT DTPa recipients, 94% of DTPw recipients and 86% of 8 micrograms PT DTPa recipients. The geometric mean anti-PT neutralizing antibody titre was significantly higher for 25 micrograms PT dose recipients (34.9 Chinese hamster ovary (CHO)) as compared with 8 micrograms PT dose recipients (21.0 CHO). The results support the use of the higher dose of PT in acellular pertussis vaccine preparations.
Vanura
H
H
General Hospital, Pediatrics Department, Tulln, Austria.
Just
M
M
Ambrosch
F
F
Berger
R M
RM
Bogaerts
H
H
Wynen
J
J
Vandevoorde
D
D
Wiedermann
G
G
D018829:Adhesins, Bacterial; D000907:Antibodies, Bacterial / Q000097:blood; D015721:Diphtheria-Tetanus-Pertussis Vaccine / Q000008:administration & dosage / Q000009:adverse effects / Q000737:chemistry / Q000276:immunology*; D004311:Double-Blind Method; D005260:Female; D006388:Hemagglutinins / Q000008:administration & dosage / Q000276:immunology*; D006801:Humans; D007223:Infant; D008297:Male; D010566:Virulence Factors, Bordetella; D014917:Whooping Cough / Q000276:immunology / Q000517:prevention & control
D018829:Adhesins, Bacterial; D000907:Antibodies, Bacterial; D015721:Diphtheria-Tetanus-Pertussis Vaccine; D006388:Hemagglutinins; D010566:Virulence Factors, Bordetella; C065273:filamentous hemagglutinin adhesin, Bordetella pertussis