Initial surveillance of 2009 influenza A(H1N1) pandemic in the European Union and European Economic Area, April

Devaux, IKreidl, PPenttinen, PSalminen, MZucs, PAmmon, ABijkerk, PMeijer, A2025-03-202025-03-2020102116318210.2807/ese.15.49.19740-enhttps://rivm.openrepository.com/handle/10029/644487Initial surveillance of 2009 influenza A(H1N1) pandemic in the European Union and European Economic Area, April - September 2009.ArticleEurosurveillance 2010; 15(49):pii=197402025-03-20