Cross-reactive memory T cells and herd immunity to SARS-CoV-2. Author(s): Lipsitch M, Grad YH, Sette A, Crotty S|Journal: Nat Rev Immunol|PMID: 33024281| October 2020 Immunity is a multifaceted phenomenon. For T cell-mediated memory responses to SARS-CoV-2, it is relevant to consider their impact both…