Allergic reaction to other diphtheria, tetanus, pertussis, poliomyelitis, hepatitis B, or HiB containing vaccines, or to glutaraldehyde, formaldehyde, neomycin, streptomycin or polymyxin B. Anaphylactic reaction after administration. Encephalopathy w/in 7 days prior dose of pertussis vaccine. Uncontrolled neurological disorder or epilepsy.