Saad-Roy, Chadi, Simon Levin, Jessica Metcalf, and Bryan Grenfell. (2021) 2021. “Trajectory of Individual Immunity and Vaccination Required for SARS-CoV-2 Community Immunity: A Conceptual Investigation.”. Journal of the Royal Society, Interface 18 (175): 20200683. doi:10.1098/rsif.2020.0683.