Spotlight on measles 2010: Measles outbreak among travellers returning from a mass gathering, Germany, September to October 2010 Pfaff , G and Lohr, D and Santibanez, S and Mankertz, A and van Treeck, U and Schönberger, K and Hautmann, W, Eurosurveillance, 15, 19750 (2010), https://doi.org/10.2807/ese.15.50.19750-en