Legionella and the European Council for Package Travel.
D016000:Cluster Analysis; D018563:Disease Notification; D005060:Europe / Q000453:epidemiology; D006801:Humans; D007877:Legionnaires' Disease / Q000453:epidemiology / Q000517:prevention & control*; D016365:Liability, Legal; D011159:Population Surveillance; D014195:Travel