Changes in vaccination uptake against pneumococcal disease, influenza, and coronavirus disease 2019 (COVID-19) before and after a Head and Neck cancer diagnosis.

Background: Pneumonia is one of the main contributors to non-cancer mortality among patients with head and neck cancer (HNC). This study aimed to determine the vaccine uptake for pneumococcal polysaccharide and conjugate vaccines, quadrivalent influenza vaccines, and mRNA COVID-19 vaccines before and after an HNC diagnosis. Furthermore, the study investigated the timing of vaccination after a cancer diagnosis.