(ANSA) - BELGRADE, MAY 13 - There is a "promising start for EU COVID19 vaccination, test and recovery certificates," the EU Commissioner for Justice (Rule of law-consumer protection) Didier Reynders said on Twitter today. "We tested EU infrastructure" with several countries, France, Austria, Sweden, Luxembourg and Croatia, and more will "follow this week and next. EU and national teams fully committed. the Digital Green Certificate is well on track for roll-out in June," Reynders noted. (ANSA).