1. Epidemiology and Surveillance Unit, Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands
2. These authors contributed equally to this work
3. Dutch Food and Consumer Product Safety Authority (NVWA), Utrecht, the Netherlands
4. Laboratory for Infectious Diseases and Perinatal Screening, Centre for Infectious Disease Control, RIVM, Bilthoven, the Netherlands
5. Preparedness and Response Unit, Centre for Infectious Disease Control, RIVM, Bilthoven, the Netherlands
6. Centre for Zoonoses and Environmental Microbiology, Centre for Infectious Disease Control, RIVM, Bilthoven, the Netherlands