EFFICACY

Demonstrated efficacy against typical* and milder pertussis in infants

A 3-dose series of INFANRIX, the DTaP component of PEDIARIX, demonstrated efficacy against pertussis in infants.1,2,‡

Protective efficacy of INFANRIX against pertussis following 3 doses1,2,‡

Protective efficacy of INFANRIX against pertussis following 3 doses1,2,‡

Protective efficacy of INFANRIX against pertussis following 3-doses graph

Study Design

A double-blind, randomized, active diphtheria and tetanus toxoids (DT)-controlled trial assessed the absolute protective efficacy of INFANRIX (Diphtheria and Tetanus Toxoids and Acellular Pertussis Vaccine Adsorbed) against pertussis when administered at 2, 4, and 6 months of age (N=5951).1,2

The efficacy of the pertussis component of PEDIARIX, which does not have a well-established correlate of protection, was determined in clinical trials of INFANRIX.1

In clinical trials with INFANRIX, rates of injection-site reactions (pain, redness, swelling) ranged from 10% to 53%, depending on reaction and dose number, and were highest following doses 4 and 5. Fever was common (20% to 30%) following doses 1-3. Other common solicited adverse events were drowsiness, irritability/fussiness, and loss of appetite, reported in approximately 15% to 60% of subjects, depending on event and dose number.2

 

Persistence data: Protection against pertussis was sustained to 6 years of age1,2

Efficacy against typical pertussis*: 86% (95% CI: 79, 91)

In an extended, unblinded follow-up period among children 3 to 6 years of age, the efficacy of INFANRIX against WHO-defined pertussis was 86% (95% CI: 79, 91). Thus, protection against pertussis in children administered 3 doses of INFANRIX in infancy was sustained to 6 years of age.1,2

PEDIARIX is approved for use as a 3-dose primary series and by itself does not constitute a complete vaccination course for DTaP.1

*WHO-defined typical pertussis is ≥21 days of paroxysmal cough with infection confirmed by culture and/or serologic testing.2