Greece on Monday mourned a 37-day-old baby, the youngest among the country's nearly 6,800 Covid-19 victims.

"Sadly, today we had the pandemic's youngest victim in our country, an infant that spent 17 of its 37 days fighting the coronavirus," Prime Minister Kyriakos Mitsotakis tweeted.

"Today, grief is unbearable," he said.

The health ministry said the baby boy was brought to an Athens children's hospital in mid-February with a nasal inflammation and fever, and placed in intensive care a day later. He died on Sunday.

Nearly 6,800 people have died of the virus in Greece, while nearly 480 people are in intensive care.

The number of people with Covid-19 who require intubation has caused concern amongst Greek health officials, who fear the pressure on Greek’s national health system.

The baby boy is tragically among the 39 people with the coronavirus who passed away in the country over the past 24-hour period.

Government spokesperson Aristotelia Peloni said that epidemiological situation in Greece remains “extremely serious.”

“It appears that the effort is becoming more and more difficult in this phase, due to people’s fatigue and the variants that in total now make up 60-70 percent of new cases in Attica, while in Crete they are close to 90 percent.”