About the Authors

Donata Kalthoff

Affiliation Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany

Angele Breithaupt

Affiliation Institute of Infectology, Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany

Barbara Helm

Affiliation Max Planck Institute for Ornithology Seewiesen and Andechs, Andechs, Germany

Jens P. Teifke

Affiliation Institute of Infectology, Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany

Martin Beer

Martin.Beer@fli.bund.de

Affiliation Institute of Infectology, Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DK BH MB. Performed the experiments: DK. Analyzed the data: DK AB JT MB. Contributed reagents/materials/analysis tools: AB BH JT. Wrote the paper: DK AB BH MB.