April 26 (UPI) -- The European Commission on Thursday urged its member nations to cooperate more closely in reducing diseases that can be prevented by vaccines. The European Center for Disease Prevention and Control has reported that several European Union countries, including Romania, Italy and Ukraine, are facing high outbreaks of measles, a highly contagious and sometimes fatal disease. "Infectious diseases are not confined within national borders," Vytenis Andriukaitis, the EU commissioner for Health and Food Safety" said in an European Commission news release. "One member state's immunization weakness puts the health and security of citizens at risk across the EU.