Greek authorities say they are ready to reimpose public and travel restrictions next week, warning that safety guidance for the coronavirus is being frequently ignored.
Stelios Petsas, the government spokesman, said authorities were "determined to protect the majority from the frivolous few," adding that the government was likely to announce new restrictions if needed on Monday.
Greece, which imposed strict lockdown measures, has kept infection rates low. But cases have crept up since restrictions were lifted and international travel resumed in recent weeks.
Pestas said authorities were focused on the rising number of cases in nearby, Balkan countries and tourists who traveled to Greece over the land border with Bulgaria, at the single crossing point that has been opened to non-essential travel.