Kroneman, ArivmVennema, HrivmHarris, JReuter, Gvon Bonsdorff, CHHedlund, KOVainio, KJackson, VPothier, PKoch, JSchreier, EBottiger, BKoopmans, Mrivm2025-03-182025-03-1820061721356510.2807/esw.11.50.03093-enhttps://rivm.openrepository.com/handle/10029/641589Increase in norovirus activity reported in Europe.ArticleEurosurveillance Weekly 2006; 11(50):pii.30932025-03-18