Response to a wild poliovirus type 2 (WPV2)-shedding event following accidental exposure to WPV2, the Netherlands, April 2017 Duizer, Erwin and Ruijs, Wilhelmina LM and van der Weijden, Charlie P and Timen, Aura, Eurosurveillance, 22, 30542 (2017), https://doi.org/10.2807/1560-7917.ES.2017.22.21.30542