Factors Associated With Marshallese and Hispanic Adults' Willingness to Receive a COVID-19 Booster Dose.

INTRODUCTION/OBJECTIVES: New variants of the SARS-CoV-2 virus that causes COVID-19 will continue to develop and spread globally. The Omicron variant identified in November 2021 has many lineages. Variants spread quickly and can infect previously vaccinated individuals, prompting the Centers for Disease Control and Prevention to update vaccination recommendations. While ~230 million Americans received the initially-recommended vaccine sequence, booster uptake has been much lower; less than half of fully vaccinated individuals report receiving a booster. Racial disparities also mark patterns of COVID-19 vaccination booster uptake. This study explored willingness and motivations to get a COVID-19 booster among a diverse sample of participants. METHODS: We used convenience sampling to recruit participants 18 years of age or older who attended a community vaccine event. We conducted informal interviews during the recommended 15-min post-vaccination wait time with 55 participants who attended vaccine events at Marshallese and Hispanic community locations and comprised the recruitment pool for individual interviews. Using a qualitative descriptive design, we conducted in-depth follow-up interviews with 9 participants (Marshallese n = 5, Hispanic n = 4) to explore willingness and motivations to get boosted. We used rapid thematic template analysis to review informal interview summaries and formal interviews. The research team resolved data discrepancies by consensus. RESULTS: Participants reported high willingness to get boosted, especially if boosters were recommended in the future to protect against serious illness and mitigate the spread of COVID-19. This finding underscores how essential including recommendations to get a COVID-19 booster from trusted sources in health messaging and educational campaigns may be for increasing booster uptake. Participants described their preference for receiving future COVID-19 boosters, reporting that they would attend similar vaccine events, especially those held at faith-based organizations and facilitated by the same community partners, community health workers, and research staff. This finding shows how community engagement can overcome barriers to vaccination (ie, transportation, language, and fear of discrimination) by providing services in preferred community locations with trusted community partners. CONCLUSIONS: Findings document high willingness to get a COVID-19 booster, emphasize the role of recommendations from trusted sources in motivating booster uptake, and highlight the importance of community engagement to address disparities in vaccination coverage and reach.

Reaching late adopters: factors influencing COVID-19 vaccination of Marshallese and Hispanic adults.

BACKGROUND: Marshallese and Hispanic communities in the United States have been disproportionately affected by COVID-19. Identifying strategies to reach late vaccine adopters is critical for ongoing and future vaccination efforts. We utilized a community-engaged approach that leveraged an existing community-based participatory research collaborative of an academic healthcare organization and Marshallese and Hispanic faith-based organizations (FBO) to host vaccination events. METHODS: Bilingual Marshallese and Hispanic study staff conducted informal interviews with 55 participants during the 15-minute post-vaccination observation period and formal semi-structured interviews with Marshallese (n = 5) and Hispanic (n = 4) adults post-event to assess the implementation of community vaccine events at FBOs, with a focus on factors associated with the decision to attend and be vaccinated. Formal interview transcripts were analyzed using thematic template coding categorized with the socio-ecological model (SEM). Informal interview notes were coded via rapid content analysis and used for data triangulation. RESULTS: Participants discussed similar factors influencing attitudes and behaviors toward receiving the COVID-19 vaccine. Themes included: (1) intrapersonal - myths and misconceptions, (2) interpersonal - protecting family and family decision-making, (3) community - trust of community location of events and influence of FBO members and leaders, (4) institutional - trust in a healthcare organization and bilingual staff, and (5) policy. Participants noted the advantages of vaccination delivery at FBOs, contributing to their decision to attend and get vaccinated. CONCLUSIONS: The following strategies may improve vaccine-related attitudes and behaviors of Marshallese and Hispanic communities not only for the COVID-19 vaccine but also for other preventive vaccinations: 1) interpersonal-level - develop culturally-focused vaccine campaigns targeting the family units, 2) community-level - host vaccination events at convenient and/or trusted locations, such as FBOs, and engage community and/or FBO formal or lay leaders as vaccine ambassadors or champions, and 3) institutional-level - foster trust and a long-term relationship with the healthcare organization and provide bilingual staff at vaccination events. Future research would be beneficial to investigate the effects of replicating these strategies to support vaccine uptake among Marshallese and Hispanic communities.