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. 2021 Feb 16;82(4):255–263. doi: 10.1016/j.humimm.2021.02.007

Table 1.

Characteristics of volunteers screened for possible CP donation.

Characteristics N (%)/Median (IQR)
(N = 171)
Age 44.2 years (33.5–54.5 years)
Sex
 Male 79 (46.2)
 Female 92 (53.8)
Symptom severity
 Mild 129 (75.4)
 Moderate 42 (24.6)
 Duration of Symptoms 13.0 days (8.0–17.8 days)
Previous RT PCR
 Positive 40 (23.4)
 Negative 15 (8.8)
 No test 116 (67.8)
Previous Antibody test
 Positive 6 (3.5)
 Negative 1 (0.6)
 No test 164 (95.9)
Current RT PCR
 Positive 16 (9.4)
 Negative 146 (85.4)
 Not donea 9 (5.3)
Current Antibody Test
 Positive 65 (38.0)
 Negative 106 (62.0)
ELISA Titer (N = 59)b
 Negative 1 (1.7)
 1:512 1 (1.7)
 1:1024 8 (13.6)
 1:2048 10 (16.9)
 1:4096 24 (40.7)
 1:8192 8 (13.6)
 1:16384 1 (1.7)
 1:32768 2 (3.4)
 1:65536 2 (3.4)
Lost to follow up 2 (3.4)

a. Volunteers were asymptomatic for >28 days.

b. Screened positive using the lateral flow assay and negative for viral RNA RT PCR.