CHMP5 and COVID-19: We tested T-cell response to single peptides derived from spike (N = 43) or non-spike proteins (ORF1ab, ORF3A, Envelope; N = 57) in three sub-cohorts: PWUD (N = 19), HD (N = 12), and, as positive controls, COVID-19 Wuhan convalescent patients (N = 5; see Materials and methods and Supplementary Methods for peptide list).