| AncestryDNA Survey State | Severity Score | WHO Patient State | WHO Score |
|---|---|---|---|
| Uninfected | 0 | Uninfected | 0 |
| Asymptomatic | 1 | Asymptomatic | 1 |
| Symptomatic, mild symptoms | 2 | Symptomatic, no assistance needed | 2 |
| Symptomatic, severe symptoms | 3 | Symptomatic, assistance needed | 3 |
| Hospitalized, no oxygen | 4 | Hospitalized, no oxygen | 4 |
| Hospitalized, oxygen | 5 | Hospitalized, oxygen by mask/nasal prongs | 5 |
| Hospitalized, oxygen by NIV/high flow | 6 | ||
| Hospitalized, ventilator | 6 | Intubation and mechanical ventilation | 7 |
| Mechanical ventilation and vasopressors | 8 | ||
| Mechanical ventilation, vasopressors, dialysis, or ECMO | 9 |
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