Five mobile One Health clinics were launched in Pima County, Arizona, from October 2023 to February 2024, to provide integrated health services to people experiencing homelessness (PEH) and their pets. Located in accessible areas like parks, libraries, and shelters, these clinics aimed to reduce transportation barriers and promote community engagement. They offered a range of public health, veterinary, and housing resources to all community members, not just PEH.

The clinics served 108 clients and 93 pets over their first five months. Among clients, 44% were unhoused or unstably housed, while 36% were housed, and housing status was unknown for 20%. Data collected included demographic information, housing status, and perceptions of services provided. The clinics improved vaccine access for both humans and pets and helped identify three cases of sexually transmitted infections that might have gone undetected. This initiative fostered partnerships among service providers and strengthened connections with the community. The success of the One Health clinic model suggests that other public health agencies might adopt similar strategies to enhance health care access and engagement within their local communities.