Antibody responses to influenza virus vaccine in patients with cystic fibrosis.

Patients with cystic fibrosis were immunized with subunit influenza vaccine and their 
haemagglutination-inhibiting (HI) antibody responses were compared with responses in young healthy 
adults. There was no significant difference in the antibody levels reached 
after immunization and no evidence of any impairment of responses in 
the patient group. 