Codesigning COVID-19 booster promotion materials in online workshops with long-term care staff: a process evaluation.

When engaging communities in vaccine promotion efforts, it is critical to understand who has availability and interest in participating, and how participants experience the process. Guided by the Reach, Effectiveness, Adoption, Implementation, Maintenance framework, we evaluated an online codesign process with long-term care center staff to design coronavirus disease (COVID-19) booster promotion materials for their colleagues. Twenty-six staff joined codesign teams organized by self-identified race to culturally tailor materials during a cluster-randomized controlled trial with 40 centers in two US states. Data sources included surveys; interviews; screening, enrollment, and attendance data; fidelity assessment; codesigned materials; and focus groups. We report summary statistics and thematic analyses. We found that time constraints could impede enrollment. Most codesigners enjoyed collaborating and identified their individual contributions. Many linked having shared characteristics with their teammates (e.g. race, gender, age) to a feeling of connection. A few reported feeling motivated to engage in booster promotion. The process resulted in messages aligned with known psychological antecedents of vaccination. Considering recruitment challenges and limited participation of direct care staff, organizers should consider shorter codesign processes. Organizing teams based on shared characteristics could promote comfort. Community input should inform codesign structure and team composition to achieve optimum enrollment and engagement.