Fig. 2From: Results of the Cologne Corona Surveillance (CoCoS) project– a cross-sectional study: survey data on risk factors of SARS-CoV-2 infection, and moderate-to-severe course in primarily immunized adultsLexis plot– the time course for each participant from the date of primary immunization to possible booster vaccination (change from gray to orange) and/or possible SARS-CoV-2 infection (dot) and/or, in the case of no infection, end of the survey on 15 March 2022Back to article page