Dataset from ÓRALE COVID-19! Vaccination: An Initiative to Increase COVID-19 Vaccination in Yolo, Madera, Fresno, Stanislaus Counties in California

Background: This study focused on counties with large Latino farmworker communities and aimed to reduce vaccine hesitancy, improve uptake, and support ongoing access to testing through a community-driven approach. Agricultural workers were at high risk because they were essential employees who worked in conditions where distancing and masking were difficult, especially in high heat. Many lived in crowded housing where isolation was not possible, which increased household transmission. Testing rates among Latinos were lower than among Whites, yet positivity rates and need for intensive care were higher. Vaccination gaps were also significant despite broad eligibility.

Materials/Methods: The study partnered with trusted community organizations in Yolo, Fresno, Madera, and Stanislaus counties in California to deliver a three-tiered approach that addressed motivational and logistical barriers to vaccination and testing. The study used community outreach, incentives, and literacy-supported decision tools to guide residents through vaccine choices and testing information. Surveys and outreach activities were delivered in Spanish and English. Data from testing programs were integrated into vaccination planning to support real-time monitoring. A statistical and modeling framework was used to assess changes in vaccine hesitancy, testing behavior, and vaccine uptake across the participating counties.

Outcome/Impact: The study strengthened communication channels between health teams and Latino agricultural communities and supported vaccine acceptance by addressing cultural, language, and structural barriers. Targeted outreach improved residents’ ability to seek testing, understand vaccine information, and complete vaccination. The study also produced models that helped local teams evaluate different rollout scenarios and plan responses tailored to community needs. These results supported more equitable access to COVID-19 vaccination and testing for farmworker families who faced crowded living conditions and high exposure risk.