SeroTracker is an interdisciplinary and international initiative, involving 30 researchers, developers, and data scientists affiliated with eight universities in Canada, the United States, and the United Kingdom. SeroTracker’s main partnership is with Canada’s COVID-19 Immunity Task Force (CITF), which gave initial funding to the initiative and provides extra guidance and expertise, as well as support for the maintenance of the dashboard. The SeroTracker team in turn serves the CITF’s need for global serological testing data and provides strategic support and research. Since its start in April 2020, SeroTracker has developed global partnerships with leading research institutes, governments, and nonprofit organizations. SeroTracker is working with the World Health Organization to visualize and synthesize results from the Unity Studies. SeroTracker is also collaborating with Germany’s Robert Koch Institute and other groups to use learnings from seroprevalence data to inform public health responses worldwide.