Table 1. Number of diagnosed human West Nile and Usutu virus infections, Austria, 2009–2018.
| Year | West Nile virus infections | Reference | Usutu virus infections | Reference | |||||
|---|---|---|---|---|---|---|---|---|---|
| Autochthonous | Imported | Total | Autochthonous | ||||||
| WNND | WNF | Asympt WNV | Blood donors | Blood donors | |||||
| 2009 | 1 | 1 | 0 | ND | 0 | 2 | [5] | ND | NA |
| 2010 | 1 | 0 | 0 | ND | 0 | 1 | ND | NA | |
| 2011 | 0 | 0 | 0 | ND | 0 | 0 | NA | ND | NA |
| 2012 | 0 | 0 | 0 | ND | 3 | 3 | NA | ND | NA |
| 2013 | 0 | 0 | 0 | ND | 0 | 0 | NA | ND | NA |
| 2014 | 1 | 0 | 0 | 1 | 0 | 2 | [7,8] | 0 | NA |
| 2015 | 1 | 0 | 1 | 5 | 0 | 7 | [6] [9] |
0 | NA |
| 2016 | 1 | 1 | 0 | 3 | 0 | 5 | 1 | [9] | |
| 2017 | 2 | 2 | 1 | 1 | 1 | 7 | 6 | ||
| 2018 | 4 | 11 | 0 | 6 | 6 | 27 | NA | 18 | NA |
| Total | 11 | 15 | 2 | 16 | 10 | 54 | NA | 25 | NA |
Asympt: asymptomatic; NA: not applicable; ND: not done; WNF: West Nile fever; WNND: West Nile neuroinvasive disease; WNV: Nest Nile virus.