About the Authors

Satu Hepojoki

Affiliation Department of Virology, Haartman Institute, University of Helsinki, Helsinki, Finland

Visa Nurmi

Affiliation Department of Virology, Haartman Institute, University of Helsinki, Helsinki, Finland

Antti Vaheri

Affiliations Department of Virology, Haartman Institute, University of Helsinki, Helsinki, Finland, Helsinki University Central Hospital, Hospital District of Helsinki and Uusimaa, Laboratory Services, HUSLAB, Helsinki, Finland

Klaus Hedman

Affiliations Department of Virology, Haartman Institute, University of Helsinki, Helsinki, Finland, Helsinki University Central Hospital, Hospital District of Helsinki and Uusimaa, Laboratory Services, HUSLAB, Helsinki, Finland

Olli Vapalahti

Affiliations Department of Virology, Haartman Institute, University of Helsinki, Helsinki, Finland, Helsinki University Central Hospital, Hospital District of Helsinki and Uusimaa, Laboratory Services, HUSLAB, Helsinki, Finland, Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland

Jussi Hepojoki

jussi.hepojoki@helsinki.fi

Affiliation Department of Virology, Haartman Institute, University of Helsinki, Helsinki, Finland

Competing Interests

The authors have filed a patent application regarding the invention described in the manuscript. The number of the patent application is 20145191. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: SH JH VN OV KH AV. Performed the experiments: SH JH VN. Analyzed the data: SH JH OV KH AV. Contributed reagents/materials/analysis tools: SH JH OV KH. Contributed to the writing of the manuscript: SH JH VN OV KH AV.