Vacationers huddling on ships and aircraft for a visit to some Greek summer paradise will be exposed without any shield to the new subvariants of the virus.

There has been an increase in new Covid-19 infections in the last three weeks, especially in tourist areas, according to an emergency briefing given by National Organisation for Public Health (NOPH) experts on Monday.

The number of single-day Covid-19 infections recorded in Greece on Saturday reached 4,539 over the past 24 hours. The figure brings the number of confirmed Covid-19 infections in the country, since the beginning of the pandemic, to 3,496,807.