About the Authors

Gudrun S. Freidl

gudrun.freidl@rivm.nl

Affiliations Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands, Emerging Infectious Diseases, Division of Virology, Centre for Infectious Diseases Research, Diagnostics and Perinatal Screening, Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands

Erwin de Bruin

Affiliation Emerging Infectious Diseases, Division of Virology, Centre for Infectious Diseases Research, Diagnostics and Perinatal Screening, Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands

Janko van Beek

Affiliations Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands, Emerging Infectious Diseases, Division of Virology, Centre for Infectious Diseases Research, Diagnostics and Perinatal Screening, Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands

Johan Reimerink

Affiliation Emerging Infectious Diseases, Division of Virology, Centre for Infectious Diseases Research, Diagnostics and Perinatal Screening, Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands

Sjaak de Wit

Affiliation GD Animal Health Service (AHS), Deventer, The Netherlands

Guus Koch

Affiliation Central Veterinary Institute (CVI), Lelystad, The Netherlands

Lonneke Vervelde

Current address: The Roslin Institute and R(D)SVS, University of Edinburgh, Edinburgh, United Kingdom

Affiliation Utrecht University, Utrecht, The Netherlands

Henk-Jan van den Ham

Affiliation Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands

Marion P. G. Koopmans

Affiliations Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands, Emerging Infectious Diseases, Division of Virology, Centre for Infectious Diseases Research, Diagnostics and Perinatal Screening, Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: GF EDB JVB JR MK. Performed the experiments: GF JVB JR EDB MK. Analyzed the data: GF JVB HJVDH MK. Contributed reagents/materials/analysis tools: JVB HJVDH SDW GK LV. Wrote the paper: GF EDB MK.