Response of immunocompromised children with solid tumors to a conjugate vaccine for Haemophilus influenzae type b.

Serum antibody response to a conjugated Haemophilus influenzae type b polyribosylribitol phosphate-diphtheria toxoid vaccine was assessed in nonvaccinated children aged 1 1/2 to 5 years receiving chemotherapy for solid tumors. Responses occurred in 21 (42%) of 50 children after first vaccination, and in 10 (45%) of 22 revaccinated children.