September 1986

A Double-blind Study Comparing an Acellular Pertussis—Component DTP Vaccine With a Whole-Cell Pertussis—Component DTP Vaccine in 18-Month-Old Children

Author Affiliations

From the Department of Pediatrics, UCLA School of Medicine, Center for the Health Sciences (Drs Lewis and Cherry); and the Descanso Pediatric Medical Group, LaCanada, Calif (Drs Holroyd, Baker, Dudenhoeffer, and Robinson).

Am J Dis Child. 1986;140(9):872-876. doi:10.1001/archpedi.1986.02140230042025

• An acellular pertussis—component diphtheria-tetanus-pertussis (AC-DTP) vaccine was compared with a currently licensed, whole-cell pertussis—component DTP (WC-DTP) vaccine for reactogenicity and immunogenicity when given as the fourth DTP immunization in sixty 18- to 24-month-old children. Reactions over the first 48 hours were significantly less common in the AC-DTP vaccine recipients, as follows (WC-DTP/AC-DTP): fever, 85%/5%; redness, 70%/12.5%; tenderness, 100%/22.5%; swelling, 35%/10%; fretfulness, 70%/12.5%; anorexia, 35%/2.5%; and vomiting, 10%/0%. Antibody responses to pertussis antigens (agglutinogens, lymphocytosis-promoting factor, and filamentous hemagglutinin), diphtheria toxoid, and tetanus toxoid in AC-DTP vaccine recipients were comparable with those in WC-DTP vaccine recipients. The AC-DTP vaccine evaluated in this trial seems to be as immunogenic as WC-DTP vaccine while being markedly less reactogenic.

(AJDC 1986;140:872-876)