Bezold, Carla, Erin Sizemore, Heather Halter, Diana Bartlett, Kelly Hay, and Hammad Ali. “Sara Alert: An Automated Symptom Monitoring Tool for COVID-19 in 11 Jurisdictions in the United States, June – August, 2021”. Online Journal of Public Health Informatics 14, no. 1 (November 23, 2022). Accessed March 28, 2024. https://ojphi.org/ojs/index.php/ojphi/article/view/12449.