Figure 2.
Seroprevalence and hybrid immunity in Phases 5 and 6 of Corona Immunitas, Switzerland, in relation to the evolution of the pandemic, August 2021–August 2022. ICU, intensive care unit. The evolution of the pandemic is visualized by the number of laboratory-confirmed SARS-CoV-2 cases (in purple), hospitalizations (turquoise) and intensive care unit admissions (in yellow) in Switzerland between August 2021 and August 2022, retrieved from: [https://ourworldindata.org/coronavirus].37 The time frame of Phases 5 (March 2022, n =1894) and 6 (June/July 2022, n = 2553) of Corona Immunitas, when the blood sampling and questionnaire assessments took place, are highlighted in light yellow. The results regarding seroprevalence and percentage of participants with hybrid immunity are visualized in dark and light blue bars, respectively