Immunogenicity of influenza vaccination in patients with cancer receiving immune checkpoint inhibitor.

Among prospectively enrolled adult patients with cancer receiving immune checkpoint inhibitors (ICIs, n=46) or cytotoxic agents (n=90), seroprotection and seroconversion rates after seasonal quadrivalent influenza vaccinations were higher with ICI than with cytotoxic chemotherapy. These results supports administration of annual influenza vaccinations for patients with cancer that receive ICIs.