This repository contains the scripts for statistical analysis, figures, and tables used for the study "Protection of COVID-19 vaccination and previous infection against Omicron BA.1, BA.2 and Delta SARS-CoV-2 infections" Stijn P. Andeweg, Brechje de Gier, Dirk Eggink, Caroline van den Ende, Noortje van Maarseveen, Lubna Ali, Boris Vlaemynck, Raf Schepers, Susan J.M. Hahné, Chantal B.E.M. Reusken, Hester E. de Melker, Susan van den Hof, Mirjam J. Knol