Neutralising antibody titres as predictors of protection against SARS-CoV-2 variants and the impact of boosting: a meta-analysis oleh Deborah Cromer, PhD, Megan Steain, PhD, Arnold Reynaldi, PhD, Timothy E Schlub, PhD, Adam K Wheatley, PhD, Jennifer A Juno, PhD, Stephen J Kent, MD, James A Triccas, PhD, David S Khoury, PhD, Miles P Davenport, DPhil