COVID-19 Booster Uptake: Are Hesitant Adopters Less Likely to Get a Booster Shot Than Nonhesitant Adopters?

Abstract

The main objective of this study was to assess whether hesitancy toward receiving the initial COVID-19 vaccine was associated with uptake of the COVID-19 booster several months after it became available to all US adults. We ask whether hesitancy toward the initial COVID-19 vaccine was significantly associated with lower odds of COVID-19 booster uptake among adults. We test this association within the context of the highly rural state of Arkansas. By January 2022, the US had set a global record of nearly 1 million daily cases. The purpose of this study was to advance our understanding of vaccine hesitancy among those who have already received a dose of the COVID-19 vaccine and how that hesitancy may shape COVID-19 booster uptake. We analyzed data from a random sample survey of Arkansan adults (N = 2,201) between March 1 and March 28, 2022 and constrained our analytical sample to those who had received a vaccine (N = 1,649). Nearly two-thirds of vaccinated Arkansas residents had received a COVID-19 booster. Hesitancy was common even among vaccinated individuals and was significantly associated with reduced odds of COVID-19 booster uptake, even after controlling for other factors. Findings provide further support for conceptualizing vaccine hesitancy as an attitude related to—but separate from—the behavior of vaccination, as opposed to conflating vaccination with being nonhesitant. Public health interventions aimed at increasing COVID-19 booster uptake should pay attention to vaccine hesitancy indicated at the initiation of the series and should not ignore the vaccinated as an important population to target for intervention.