Emerging Infectious Disease ISSN: 1080-6059

Prevalence and Pathogenicity of WU and KI Polyomaviruses in Children, the Netherlands

Marieke M. van der Zalm

, John W. A. Rossen, Bart E. van Ewijk, Berry Wilbrink, Petra C.H.M. van Esch, Tom F.W. Wolfs, and Cornelis K. van der Ent

Author affiliations: Wilhelmina Children’s Hospital at University Medical Center Utrecht, Utrecht, the Netherlands (M.M. van der Zalm, B.E. van Ewijk, T.F.W. Wolfs, C.K. van der Ent); St. Elisabeth Hospital, Tilburg, the Netherlands (J.W.A. Rossen, P.C.H.M. van Esch); National Institute of Public Health and the Environment, Bilthoven, the Netherlands (B. Wilbrink);

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Figure 2

Timelines of WU polyomavirus (WUPyV ) and KI polyomavirus (KIPyV) in 2-week samples, taken regardless of symptoms. Samples were collected during November 2004–April 2005, throughout the Netherlands. Each line represents a child in order of increasing age (patients 1–18, aged <1–7 years); the time between 2 vertical lines accounts for ≈2 weeks. The solid symbols are WUPyV infections; the open symbols are KIPyV infections.

Figure 2. Timelines of WU polyomavirus (WUPyV ) and KI polyomavirus (KIPyV) in 2-week samples, taken regardless of symptoms. Samples were collected during November 2004–April 2005, throughout the Netherlands. Each line represents a child in order of increasing age (patients 1–18, aged <1–7 years); the time between 2 vertical lines accounts for ≈2 weeks. The solid symbols are WUPyV infections; the open symbols are KIPyV infections.

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