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Severity of COVID-19 in patients with history of seasonal coronavirus (OC43, HKU1, 229E, and NL63) prior to COVID-19 pandemic.
| Post-pandemic SARS-CoV-2 |
|||||
|---|---|---|---|---|---|
| Mild | Moderate/Severe | Pvalue | |||
| Pre-pandemic seasonal CoV | Northern California | Positive | 71.4% (5) | 28.6% (2) | 0.83 |
| Negative | 67.3% (33) | 32.7% (16) | |||
| Washington | Positive | 33.3% (1) | 66.7% (2) | 0.75 | |
| Negative | 25.0% (7) | 75.0% (21) | |||
| Combined | Positive | 60.0% (6) | 40.0% (4) | 0.63 | |
| Negative | 51.9% (40) | 48.1% (37) | |||
