diphtheria and tetanus toxoids and pertussis vaccine adsorbed and Haemophilus b conjugate vaccine, a combination of diphtheria toxoid, tetanus toxoid, pertussis vaccine, and Haemophilus b conjugate vaccine, administered intramuscularly to children 18 months to 5 years of age for simultaneous immunization against diphtheria, tetanus, whooping cough, and infection by Haemophilus influenzae type b.
