Table 78.
Summary of WNV infection statistics related to humans, birds and equids EU, 2017–2021
| 2021 (a) | 2020 | 2019 (b) | 2018 (b) | 2017 (b) | Data source | |
|---|---|---|---|---|---|---|
| Humans | ||||||
| Total number of confirmed and probable cases | 158 | 333 | 443 | 1,615 | 208 | ECDC |
| Total number of confirmed and probable cases/100,000 population (notification rates) | 0.04 | 0.08 | 0.09 | 0.32 | 0.05 | ECDC |
| Number of reporting MSs | 26 | 26 | 27 | 27 | 26 | ECDC |
| Infection acquired in the EU | 153 (c) | 331 | 435 | 1,573 | 205 | ECDC |
| Infection acquired outside the EU | 5 | 2 | 5 | 29 | 2 | ECDC |
| Unknown travel status or unknown country of infection | 0 | 0 | 3 | 13 | 1 | ECDC |
| Animals (d) | ||||||
| Birds | ||||||
| Number of animals tested | 19,596 | 11,141 | 14,932 | 13,970 | 11,173 | EFSA |
| Number of positive animals by PCR (e) ‐based methods | 146 | 165 | 104 | 425 | 93 | EFSA |
| Number of MSs reporting surveillance/monitoring data to EFSA | 13 | 11 | 13 | 11 | 7 | EFSA |
| Number of outbreaks notified to ADIS | 8 | 2 | 53 | 22 | 0 | ADIS |
| Number of MSs notifying outbreaks to ADIS | 2 | 1 | 2 | 6 | 0 | ADIS |
| Equids | ||||||
| Number of animals tested | 5,985 | 6,749 | 5,563 | 13,785 | 11,668 | EFSA |
| Number of positive animals by PCR (e) ‐based methods | 1 | 1 | 4 | 7 | 1 | EFSA |
| Number of animals positive for IgM by ELISA | 47 | 209 | 74 | 393 | 110 | EFSA |
| Number of MSs reporting surveillance/monitoring data to EFSA | 14 | 14 | 14 | 12 | 12 | EFSA |
| Number of outbreaks notified to ADIS | 45 | 189 | 100 | 292 | 84 | ADIS |
| Number of MSs notifying outbreaks to ADIS | 7 | 9 | 8 | 10 | 7 | ADIS |
ADIS: Animal Disease Information System; ECDC: European Centre for Disease Prevention and Control; EFSA: European Food Safety Authority; ELISA: enzyme‐linked immunosorbent assay; MSs: Member States; PCR: polymerase chain reaction.
: Data on animals from the United Kingdom (Northern Ireland) are taken into account for 2021. In accordance with the agreement on the withdrawal of the United Kingdom from the EU, and in particular with the Protocol on Ireland/Northern Ireland, EU requirements on data sampling are also applicable to Northern Ireland.
: Data from the United Kingdom are taken into account for 2017–2019, because the United Kingdom was an EU MS, but it became a third country on 1 February 2020.
: One case reported from the EU was later found to have been infected in Mayotte.
: Samples tested using an unspecified analytical method are not included.
: PCR: polymerase chain reaction.