About the Authors

Markus Helfer

Affiliation Institute of Virology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany

Herwig Koppensteiner

Affiliation Institute of Virology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany

Martha Schneider

Affiliation Institute of Virology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany

Stephanie Rebensburg

Affiliation Institute of Virology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany

Sara Forcisi

Affiliation Research Unit Analytical BioGeoChemistry, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany

Constanze Müller

Affiliation Research Unit Analytical BioGeoChemistry, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany

Philippe Schmitt-Kopplin

Affiliation Research Unit Analytical BioGeoChemistry, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany

Michael Schindler

Affiliation Institute of Virology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany

Ruth Brack-Werner

brack@helmholtz-muenchen.de

Affiliation Institute of Virology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany

Competing Interests

Co-author Michael Schindler is a PLOS ONE editorial board member. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MH RBW M. Schneider M. Schindler PSK HK. Performed the experiments: MH HK M. Schneider SR SF CM. Analyzed the data: MH HK M. Schneider M. Schindler SR SF CM RBW PSK. Wrote the paper: MH HK M. Schneider M. Schindler SR SF CM RBW PSK.