In the report issued Thursday, the agency commonly known by its French name, Medecins sans Frontiers (MSF), argued that the European Union and Greece had "collectively failed to establish humane and dignified reception conditions”, AP reported.
More than 60,000 asylum seekers- many escaping wars in Syria and Iraq - have been stranded in Greece following European border closures this year. Most still live in tents at about 50 refugee camps.
Around 14,000 of them are confined to islands in the eastern Aegean Sea where they are being processed for potential deportation back to nearby Turkey.