About the Authors

Mirjam E. E. Kretzschmar

m.e.e.kretzschmar@umcutrecht.nl

Affiliations Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands, Centre for Infectious Disease Control, National Institute of Public Health and the Environment (RIVM), Bilthoven, The Netherlands

Marianne A. B. van der Sande

Affiliations Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands, Department Public Health, Institute of Tropical Medicine, Antwerp, Belgium

Competing Interests

I have read the journal's policy and the authors of this manuscript have the following competing interests: MEK is a member of the Editorial Board of PLOS Medicine.