Tab. 2. Zusammensetzung der SARS-CoV-2-positiven Befunde.
| IgG positiv | IgG grenzwertig | IgG negativ | GESAMT | |
| PCR positiv vor Studienzeitraum | 10 | 1 | 4 | 15 |
| PCR positiv im Studienzeitraum | 0 | 0 | 3 | 3 |
| PCR negativ | 21 | 8 | 1165 | 1194 |
| GESAMT | 31 | 9 | 1172 | 1212 |
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