Disclaimer: Data points were taken from published literature (see reference list). Additional data for Ireland were kindly provided by Mooney, J., Molecular Virology Laboratory, Department of Agriculture, Food and the Marine Laboratories, Celbridge, Co Kildare, Ireland. Geographical co-ordinates were rounded to a level of uncertainty, which does not allow to conclude on addresses with confirmed resistance on the map. The center of a coloured resistance spot deviates by minimum 2km from the site of resistance sampling.