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Volume 20, Number 4—April 2014

Research

Underdiagnosis of Foodborne Hepatitis A, the Netherlands, 2008–20101

Mariska PetrignaniComments to Author , Linda Verhoef, Harry Vennema, Rianne van Hunen, Dominique Baas, Jim E. van Steenbergen, and Marion P.G. Koopmans
Author affiliations: Municipal Health Service Zoetermeer, Zoetermeer, the Netherlands (M. Petrignani, R. van Hunen); National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands (L. Verhoef, H. Vennema, D. Baas, J.E. van Steenbergen, M.P.G. Koopmans); Erasmus Medical Center, Rotterdam, the Netherlands (M.P.G. Koopmans); Leiden Medical University, Leiden, the Netherlands (J.E. van Steenbergen)

Main Article

Table 3

Hepatitis A transmission modes, the Netherlands, 2008–2010*

Transmission No. reported Sequenced, no. (%)
Total Assigned category confirmed Unresolved Assigned category misclassified and reassigned
Travel-associated 141 66 (47) 40 (61) 23 (35) 3 (5)
Person-to-person 76 53 (70) 53 (100) 0 0
Male-with-male sex 33 25 (76) 23 (92) 2 (8) 0
Foodborne 18 17 (94) 7 (41) 9 (53) 1 (6)
Unknown
153

87 (57)
NA
45 (52)
42 (48)
Total
421

248 (59)
123 (50)
79 (32)
46 (19)
*NA, not applicable; if a category was assigned after sequencing, then the assumption “unknown” was misclassified.

Main Article

1Preliminary results of this study were presented at the 15th Annual Meeting of the European Society for Clinical Virology; 2012 September 4–7; Madrid, Spain.

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