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a) SARS-CoV-2 antibodies [S/CO] in peripheral blood for multiple donations (≥ 2); d0 shows first appointment, d1 to d6 show donation 1 to 6. Sample size was as following: d0: 18 x, d1 and d2: 19 x, d3: 9 x, d4: 4 x, d5: 3 x, d6: 2x; b) Time [days] from positive SARS-CoV-2 NAT to multiple donations; d0 shows the period between positive test to first appointment, d1 to d6 shows period to donation 1 to 6.
