Author contributions
N.M.
S.C., J.F., H.Z., J.M.M. and R.D. contributed to the design of the study and oversight. S.C., J.L.W., F.E., B.E., S.K., P.B., A.B., S.R.W. and N.M. contributed to data collection. B.G., X.S. and D.C.M. were responsible for immunogenicity assays. S.C., J.F., X.Z., X.C., A.S., H.Z., R.D., J.M.M., L.R.B. and J.E.T. contributed to data analysis and/or interpretation of the data. S.C., J.F. and J.E.T. contributed to drafting the manuscript. All authors critically reviewed and provided input to manuscript drafts and approved the final version for submission to the journal.