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COVID-19 booster uptake among US adults: Assessing the impact of vaccine attributes, incentives, and context in a choice-based experiment.
Soc Sci Med. 2022 10; 310:115277.SS

Abstract

OBJECTIVE

Evidence shows that booster shots offer strong protection against the Omicron variant of COVID-19. However, we know little about why individuals would receive a booster compared to the initial decision to vaccinate. We investigate and assess the factors that affect individuals' reported willingness to receive the COVID-19 vaccine booster. This information can aid in tailoring public health messaging to communicate attributes that are associated with individuals' attitudes toward the COVID-19 booster.

RATIONALE

Existing research provides little insight into whether the same factors that affect Americans' likelihood of accepting initial vaccination against COVID-19 also affect booster uptake. Our experiment also examines the influence of contextual information about a novel variant on willingness to receive a booster.

METHODS

We administered a conjoint experiment (N = 2740 trials) in a survey of fully vaccinated US adults that had not yet received a COVID-19 booster (N = 548) to assess the impact of varied vaccine attributes on willingness to receive a booster.

RESULTS

The most important factors associated with higher willingness to receive a booster were efficacy, manufacturer, and the size of a financial incentive. Protection duration and protection against future variants vs. only current variants had modest influence. A contextual prime reporting that some public health experts believe the Omicron variant is more contagious, but less lethal than those previously seen, significantly increased favorability toward boosters. This provides potential motivation and guidance for vaccination campaigns to emphasize these variant-specific traits.

CONCLUSION

With several vaccines with varying degrees of efficacy available to consumers, emphasizing boosters with a high efficacy would likely improve attitudes toward boosters. Financial incentives and predispositions toward manufacturers also matter. Concerns about more contagious variants may spur uptake, even if such variants are less lethal.

Authors+Show Affiliations

Cornell University Brooks School of Public Policy, MVR Hall, Ithaca, NY, 14850, USA.Cornell University Brooks School of Public Policy, MVR Hall, Ithaca, NY, 14850, USA; Cornell University Dept. of Government, White Hall, Ithaca, NY, 14850, USA. Electronic address: kriner@cornell.edu.Cornell University Brooks School of Public Policy, MVR Hall, Ithaca, NY, 14850, USA.Indiana University O'Neill School of Public and Environmental Affairs, Bloomington, IN, 47404, USA.Cornell University Brooks School of Public Policy, MVR Hall, Ithaca, NY, 14850, USA; Cornell University Dept. of Government, White Hall, Ithaca, NY, 14850, USA.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

36001917

Citation

Raman, Shyam, et al. "COVID-19 Booster Uptake Among US Adults: Assessing the Impact of Vaccine Attributes, Incentives, and Context in a Choice-based Experiment." Social Science & Medicine (1982), vol. 310, 2022, p. 115277.
Raman S, Kriner D, Ziebarth N, et al. COVID-19 booster uptake among US adults: Assessing the impact of vaccine attributes, incentives, and context in a choice-based experiment. Soc Sci Med. 2022;310:115277.
Raman, S., Kriner, D., Ziebarth, N., Simon, K., & Kreps, S. (2022). COVID-19 booster uptake among US adults: Assessing the impact of vaccine attributes, incentives, and context in a choice-based experiment. Social Science & Medicine (1982), 310, 115277. https://doi.org/10.1016/j.socscimed.2022.115277
Raman S, et al. COVID-19 Booster Uptake Among US Adults: Assessing the Impact of Vaccine Attributes, Incentives, and Context in a Choice-based Experiment. Soc Sci Med. 2022;310:115277. PubMed PMID: 36001917.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - COVID-19 booster uptake among US adults: Assessing the impact of vaccine attributes, incentives, and context in a choice-based experiment. AU - Raman,Shyam, AU - Kriner,Douglas, AU - Ziebarth,Nicolas, AU - Simon,Kosali, AU - Kreps,Sarah, Y1 - 2022/08/15/ PY - 2022/03/14/received PY - 2022/07/30/revised PY - 2022/08/08/accepted PY - 2022/8/25/pubmed PY - 2022/9/24/medline PY - 2022/8/24/entrez KW - Booster KW - COVID-19 KW - Conjoint experiment KW - Public acceptance KW - Vaccine SP - 115277 EP - 115277 JF - Social science & medicine (1982) JO - Soc Sci Med VL - 310 N2 - OBJECTIVE: Evidence shows that booster shots offer strong protection against the Omicron variant of COVID-19. However, we know little about why individuals would receive a booster compared to the initial decision to vaccinate. We investigate and assess the factors that affect individuals' reported willingness to receive the COVID-19 vaccine booster. This information can aid in tailoring public health messaging to communicate attributes that are associated with individuals' attitudes toward the COVID-19 booster. RATIONALE: Existing research provides little insight into whether the same factors that affect Americans' likelihood of accepting initial vaccination against COVID-19 also affect booster uptake. Our experiment also examines the influence of contextual information about a novel variant on willingness to receive a booster. METHODS: We administered a conjoint experiment (N = 2740 trials) in a survey of fully vaccinated US adults that had not yet received a COVID-19 booster (N = 548) to assess the impact of varied vaccine attributes on willingness to receive a booster. RESULTS: The most important factors associated with higher willingness to receive a booster were efficacy, manufacturer, and the size of a financial incentive. Protection duration and protection against future variants vs. only current variants had modest influence. A contextual prime reporting that some public health experts believe the Omicron variant is more contagious, but less lethal than those previously seen, significantly increased favorability toward boosters. This provides potential motivation and guidance for vaccination campaigns to emphasize these variant-specific traits. CONCLUSION: With several vaccines with varying degrees of efficacy available to consumers, emphasizing boosters with a high efficacy would likely improve attitudes toward boosters. Financial incentives and predispositions toward manufacturers also matter. Concerns about more contagious variants may spur uptake, even if such variants are less lethal. SN - 1873-5347 UR - https://www.unboundmedicine.com/medline/citation/36001917/COVID_19_booster_uptake_among_US_adults:_Assessing_the_impact_of_vaccine_attributes_incentives_and_context_in_a_choice_based_experiment_ DB - PRIME DP - Unbound Medicine ER -