1 Department of Infectious Disease Control, Municipal Public Health Service Rotterdam-Rijnmond, Rotterdam, Netherlands. Electronic address: [email protected].
2 Department of Infectious Disease Control, Municipal Public Health Service Utrecht, Utrecht, Netherlands.
3 Viroscience, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.
4 Center for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, Netherlands.
5 Department of Infectious Disease Control, Municipal Public Health Service Rotterdam-Rijnmond, Rotterdam, Netherlands; Center for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, Netherlands.
6 Department of Infectious Disease Control, Municipal Public Health Service Rotterdam-Rijnmond, Rotterdam, Netherlands.
7 Department of Infectious Disease Control, Municipal Public Health Service Rotterdam-Rijnmond, Rotterdam, Netherlands; Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.