Table 1.
Detection of Severe Acute Respiratory Syndrome Coronavirus 2 RNA in Blood Donors Reporting Postdonation Symptoms or a Positive Test During the First Pandemic Wave and Delta and Omicron Variant Waves
| Symptom Onset (Days After Donation) | Wild-Type SARS-CoV-2 | Delta Variant | Omicron Variant | ||
|---|---|---|---|---|---|
| Same day | 0/26 | 1/15 | (6.7%) | 2/17 | (11.8%) |
| 1 d | 0/39 | 5/27 | (14.8%) | 5/38 | (13.2%) |
| 2 d | 0/64 | 4/35 | (11.4%) | 1a/40 | (2.5%) |
| 3 d | 0/32 | 0/16 | … | 0/33 | … |
| 4 d | 0/23 | 0/21 | … | 1/18 | (5.6%) |
| ≥5 d | 0/31 | 1a/27 | (3.7%) | 0/16 | … |
| Total | 0/215 | 10/141 | (7.1%) | 9/161 | (5.6%) |
Abbreviation: SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.
aDonor asymptomatic at time of reporting postdonation information and test positivity used instead of symptom onset postdonation.