Moderna’s Covid-19 vaccine shows antibody, T-cell responses a month after second dose in interim Phase I data September 30, 2020 Auto Bot BioPharma, biopharma nl, Cambridge, Massachusetts, Moderna, mRNA-1273, SARS-CoV-2 0 The company published interim data from the Phase I study of mRNA-1273 in 40 older and elderly adults, showing responses comparable to those seen in younger adults. The vaccine is being tested in a 30,000-participant Phase III trial.