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. 2022 Apr 25;3:883724. doi: 10.3389/fragi.2022.883724

FIGURE 2.

FIGURE 2

SARS-CoV-2 specific antibody response and neutralization capacity of the Delta variant in elderly LTCF residents. (A) Logarithmic depiction in boxplots, 95% CI and IQR (25–75%) of group 1 (residents of LTCFs ≥75 years of age; yellow), group 2 (HCWs at LTCFs, 18–70 years of age; blue), and group 3 (residents of LTCFs after breakthrough infection; green). Rhomboids represent outliers, the red line displays the cut-off anti-SARS-CoV-2 spike IgG antibody concentration of 8.52 BAU/ml, which is considered a positive test result (borderline: 7.10–8.51 BAU/ml). (B) Violin plots for visualization of differences in the non-logarithmic distribution of anti-SARS-CoV-2 spike IgG antibody titers of groups 1 (residents of LTCFs ≥75 years of age; orange) and 2 (HCWs at LTCFs, 18–70 years of age; blue). (C) Violin plots displaying the different distributions of neutralization titers against the Delta variant between study groups.