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A and B. Proportion of participants with positive antibody response defined as postvaccination antibody levels over the cut-off (seropositivity) in seronegative patients or ≥ 4-fold increase in antibody levels in patients with seropositivity for both spike antigens in each treatment group (biologic/ts DMARD as monotherapy or biologic/ts DMARD + csDMARD; B Biologic/ts DMARDs all) and controls.
