Learning from one another to implement and improve equitable contact-tracing

In March, when COVID-19 rapidly spread across the United States, countries that had already experienced mass exposure were leaning on contact-tracing efforts to acknowledge, track, and prevent further spread of the virus. As a trained epidemiologist with a background in public health, I knew the importance of disease investigation. As a researcher at Mathematica, I knew that effective contact tracing meant reaching people where they are, building trust, and being flexible about the approaches used. And as a Californian, I felt compelled to help. (author introduction)