The Member States 25 March 1957, Consolidated version of the Treaty on the Functioning of the European Union#PART ONE - PRINCIPLES#TITLE I - CATEGORIES AND AREAS OF UNION COMPETENCE#Article 5

(j) area of freedom, security and justice; (k) common safety concerns in public health matters, for the aspects defined in this Treaty. 3. In the areas of research, technological development and space, the Union shall have competence to carry out activities, in particular to define and implement programmes; however, the exercise of that competence shall not result in Member States being prevented