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Longitudinal trends of aCL, anti-β2GPI, and aPS/PT, IgG, IgM, and IgA before (0) and after vaccination (time points: 1—3 weeks after vaccination, 2—3 months after vaccination, 3—6 months after vaccination, 4—9 months after vaccination, and 5—3 weeks after the third booster dose). The blue lines connect the aPL levels of the individual HCPs. Values above the green line (99th percentile of healthy blood donors) are considered positive.
