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Database for USUV RNA detection in birds in Germany from 2019 and 2020. (A) Results from 2019: USUV-RNA-positive birds = 151 (orange dots) and USUV-RNA-negative birds = 1087 (green dots). (B) Results from 2020: USUV-RNA-positive birds = 48 (orange dots) and USUV-RNA-negative birds = 1690 (green dots).
