About the Authors

Sylvie Python

Affiliation Institute of Virology and Immunology, Mittelhäusern, Switzerland

Markus Gerber

Affiliation Institute of Virology and Immunology, Mittelhäusern, Switzerland

Rolf Suter

Affiliation Institute of Virology and Immunology, Mittelhäusern, Switzerland

Nicolas Ruggli

nicolas.ruggli@ivi.admin.ch (NR); artur.summerfield@ivi.admin.ch (AS)

Affiliation Institute of Virology and Immunology, Mittelhäusern, Switzerland

Artur Summerfield

nicolas.ruggli@ivi.admin.ch (NR); artur.summerfield@ivi.admin.ch (AS)

Affiliation Institute of Virology and Immunology, Mittelhäusern, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SP RS NR AS. Performed the experiments: SP MG. Analyzed the data: SP MG NR AS. Contributed reagents/materials/analysis tools: RS. Wrote the paper: SP NR AS.