There are about 22,000 refugees in the Moria camp on the island of Lesbos. An outbreak of the coronavirus is feared to spread rapidly due to unsanitary conditions, with little opportunity for example to wash your hands. So many people gathered on a small area also makes it difficult to isolate sick patients.

"The limited area and lack of hygiene in the camp is a perfect situation for an outbreak. At least we should evacuate the most vulnerable," says Stephan Oberreit, Head of Mission for Doctors Without Borders.

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