Table 4
A ten point severity, occurrence and detection scale with a list of criterion to reflect the COVID-19 pandemic in the United Kingdom. Updated on 31 October 2020.
| Ranking | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Severity | Insignificant | Very minor | Minor | Low | Moderate | Moderately high | High | Very high | Extremely high | Critical |
| Criteria S: Case fatality rate | ≈0% | <0.1% | 0.1–0.3% | 0.3–0.5% | 0.5–1.0% | 1.0–1.5% | 1.5–2.0% | 2.0–2.5% | 2.5–3.0% | >3% |
| Rate of Occurrence | Very remote | Remote | Very low | Low | Moderately low | Moderate | Moderately high | High | Very high | Extremely high |
| Criteria O: Expected number of individuals infected from a single infectious person (using posterior median of the reproduction number) | ≈0 | <0.1 | 0.1–0.2 | 0.2–0.4 | 0.4–0.7 | 0.7–1.0 | 1.0–1.3 | 1.3–1.6 | 1.6–2.0 | >2 |
| Likelihood of Detection/Prevention | Failure prevented | Failure likely to be prevented | Control measures are working | Low levels of detection/prevention | Not likely to detect | No detection opportunity | ||||
| Criteria D: Control measures (affecting the whole population) and rate of detection/prevention) | Vaccine is produced with 90%+ success rate | Nationwide lockdown applied in full force | Nationwide lockdown gradually applied | Self-isolation and “stay at home” practices | Practice social distancing | Sanitization of cities and towns | Mandatory face coverings | Regular hand washing not practiced regularly | Prevention measures | None |
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