 The study examined the relationship between SARS-CoV-2 testing behavior and various factors during the COVID-19 pandemic in England. It found that testing behavior was influenced by transmission levels, disease severity, public health measures, and risk perception. Transmission levels had the greatest influence on testing behavior, followed by disease severity, public health measures, and risk perception. This article was authored by Young Junkim, Chrisle A. Donnelly, and Pierre Nouvellet.