Healthy Yolo Together (HYT), also known as Healthy Davis Together (HDT), is a joint project of the City of Davis and UC Davis. It is designed to prevent the spread of COVID-19 through the development of access to testing and vaccines, the dissemination of accurate information to counter misinformation, and the facilitation of a gradual return to regular city activities. The project commenced in September 2020 with a focus on Davis but later expanded to Yolo County.