Randomized comparative study of the serum antihemagglutinin and antineuraminidase antibody responses to six licensed trivalent influenza vaccines

► Minimal reactogenicity for 5 inactivated vaccines and a live vaccine. ► Similar serum anti-hemagglutinin antibody responses to 5 inactivated vaccines. ► All 5 inactivated vaccines induced serum anti-neuraminidase antibody.