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Percentage of Omicron lineages in samples obtained between April 2022 and December 2023. (a) Patients were classified based on age groups. (b) Patients were classified according to their health status: hospitalized, admitted to Intensive Care Unit (ICU), immunocompromised. (c) Patients were classified based on number of vaccination doses. Statistical analysis: Two-way ANOVA, Tukey’s multiple comparisons test.
