Since the war began in 2011, half of Syria's pre-war population of 22 million people has been displaced or killed. Most of those who escaped now live in camps in Jordan, Lebanon, Turkey or Greece. More than 650,000 Syrian refugees fled to Jordan. About eight percent of those people, the ones with the greatest needs and the fewest resources, now live in refugee camps. Amnesty International has described their access to medical care as "grossly inadequate." This sudden overwhelming influx, and the long wait for a solution, has taxed the country's health care resources.