Table 2.
Comparison of reported and seroprevalence-derived expected number of infections
| Country | Seroprevalence estimate, % (95% CI) | Infections reported 15 days prior to end of blood sample collection (n) | Seroprevalence-derived expected number of infections | Seroprevalence-derived expected number of infections (lower CI) | Seroprevalence-derived expected number of infections (upper CI) | Ratio of reported infections to seroprevalence-derived number of infections |
| Spain9 | 4.6 (4.3 to 5.0) | 210 623 | 2 159 105 | 2 018 294 | 2 346 853 | 0.10 |
| Luxembourg12 | 1.97 (1.25 to 2.69) | 3550 | 12 097 | 7685 | 16 508 | 0.29 |
| Faroe Islands7 | 0.6 (0.2 to 1.2) | 184 | 292 | 97 | 584 | 0.63 |
| Belgium11 | 4.5 (3.7 to 5.4) | 60 854 | 515 498 | 423 854 | 618 598 | 0.12 |