Figure 1.

Co-circulation of Usutu virus (USUV) and West Nile virus (WNV) in European countries. The map shows European countries where USUV, WNV or co-infection cases are reported according to the data provided by European Centre for Disease prevention and control (ECDC) and literatures. Countries where both USUV and WNV co-circulate are represented in green. Countries where only USUV or WNV circulates are represented in blue or orange, respectively. The map was generated by using the free online tools https://mapchart.net/europe.html.