About the Authors

Jacco Wallinga

To whom correspondence should be addressed. E-mail: jacco.wallinga@rivm.nl

Affiliation Centre for Infectious Disease Epidemiology, National Institute for Public Health and the Environment, Bilthoven, the Netherlands

Janneke C. M Heijne

Affiliation Centre for Infectious Disease Epidemiology, National Institute for Public Health and the Environment, Bilthoven, the Netherlands

Mirjam Kretzschmar

Affiliation Centre for Infectious Disease Epidemiology, National Institute for Public Health and the Environment, Bilthoven, the Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

JW designed the study. JW and JCMH collected and analyzed the data. JW, JCMH, and MK contributed to writing the paper.