Mytilene (Greece) (AFP)

The field of olive trees next to the Moria camp on the Greek island of Lesbos was filled with makeshift tents and wooden and cardboard huts, with the sudden arrival of hundreds of migrants.

Enaiat Khoshei, 15, lives with 12 other people in a temporary tent outside the camp where the ground is muddy.

The young Afghan arrived two months ago on the island of the Aegean Sea saw the field of olive trees fill up very quickly in recent days.

On Thursday evening, only thirteen boats arrived in Lesbos with about 540 people on board, including 240 children, authorities and local NGOs said.

The Moria hotspot, a refugee registration and identification center, is once again overcrowded, four years after the migration crisis of 2015: designed for 3,000 people, it now hosts almost 11,000 according to the NGO Doctors Without Borders (MSF).

Arrivals of boats loaded with exiles, which have accelerated in recent weeks, have taken by surprise the Greek authorities who were not prepared to accommodate as many refugees.

"The month of July 2019 was the month with the highest number of arrivals since March 2016, and since then we have far exceeded this figure with more than 3,000 arrivals in August alone," says Astrid. Castelein, head of the delegation of the UN High Commissioner for Refugees on the island.

"It is obvious that the number of arrivals is not as high as in 2015. However, since the Moria center already hosts 10,000 people, nearly four times the standard capacity assessed by UNHCR, and the number of departures from the island is very low, the situation requires urgent action "continues Astrid Castelein.

It would like the Greek Government to speed up the transfer of the most vulnerable people, including children to more suitable accommodation.

On Friday, the Greek government announced that a thousand people from the Moria camp would soon be transferred to camps in northern Greece.

- "Children in the mud" -

Foreign Minister Nikos Dendias also summoned the Turkish ambassador to Greece on Friday to express "his strong dissatisfaction" and remind him of Ankara's obligations under the EU-Turkey declaration of March 2016, according to a diplomatic source.

Turkey then pledged to act to stop the flow of refugees to Europe.

But in Lesbos, for Enaiat Khoshei, the weather is long and the conditions of survival difficult. He especially deplores the lack of access to care: "my father has heart problems and can not be examined by a doctor ... I worry about him," sighs the teenager.

Only two doctors work in the Moria camp.

"We see children who are everywhere in the earth and mud, cancer patients who are not cared for, women who can not even get in the shade to nurse their baby," says Paraskevas Moschou, the cordiner from the Greek public health agency on the spot.

According to him, 6,000 people are waiting to be examined by doctors - an obligation to detect the most vulnerable people who can be transferred to the Greek mainland.

"We have nowhere to greet and register them," said Vassilis Davas, the employee representative for the Moria center.

"The police presence remains the same as when the camp only houses 4,000 people" he complains, while also deploring the lack of interpreters.

© 2019 AFP