Residents of the southern region of Puglia will have to self-isolate for 14 days upon re-entry if they travel to Spain, Greece or Malta, according to a new regional ordinance, after a number of recent infections were traced back to returning holidaymakers.

"In the last two days we've logged numerous cases of Puglia residents who have tested positive after coming back from Greece, Malta, Spain, countries with a high viral circulation," said regional president Michele Emiliano as he announced the new rule on Tuesday evening.