Table 2.
Estimated medians and confidence intervals of the basic reproductive number, R0, and their corresponding herd immunity thresholds for eight European countries and the US.
| Country | Abbreviation | Median R0 | Confidence interval – R0 | Classical herd immunity threshold | Confidence interval – herd immunity |
|---|---|---|---|---|---|
| Belgium | BE | 3.6 | (2.9, 4.6) | 72% | (65%, 78%) |
| France | FR | 4.4 | (3.6, 5.4) | 77% | (72%, 81%) |
| Germany | GR | 4.7 | (3.8, 5.8) | 79% | (74%, 83%) |
| Italy | IT | 4.6 | 3.7, 5.8) | 78% | (73%, 83%) |
| Netherlands | NT | 3.5 | (3.0, 4.2) | 72% | (67%, 76%) |
| Spain | SP | 6.4 | (5.2, 8.0) | 84% | (81%, 88%) |
| Switzerland | SW | 3.5 | (2.8, 4.3) | 71% | (63%, 77%) |
| United Kingdom | UK | 3.9 | (3.3, 4.6) | 74% | (69%, 78%) |
| United States | US | 5.9 | (4.7, 7.5) | 83% | (79%, 86%) |