Fig. 1.

Percentage of vaccinated patients in the seasons 2018/2019, 2019/2020, and 2020/2021 according to the age of patients. Vaccination coverage was significantly higher in over-65-year-old patients (n = 129, 33%) in the 2018/2019 and 2019/2020 seasons. Vaccination coverage among under-65-year-old patients (n = 262, 67%) increased significantly in 2020/2021 compared with both 2019/2020 and 2018/2019. Vaccination coverage among ≥ 65-year-old patients increased significantly in 2020/2021 compared with 2018/2019. *Inter-group comparisons; #Intra-group comparisons. Statistical significance: **p < 0.01; ***.^,###p < 0.001