Understanding willingness to receive new vaccines is critical for vaccine rollout and addressing vaccine hesitancy. Future COVID-19 and influenza vaccination may coincide, creating a need to understand the dynamics between ongoing vaccine adherence for familiar diseases and novel vaccine acceptance. We combine longitudinal data with a classification of individual influenza vaccination histories to answer 2 questions: (1) how COVID-19 vaccination differs across historical influenza vaccination patterns, and (2) how influenza vaccination changed during the COVID-19 pandemic.