A look at some of the world's worst refugee crises amid the coronavirus pandemic

The rapid spread of the coronavirus has raised fears about the world’s refugees and internally displaced people, many of whom live in war-ravaged countries ill-equipped to test for the virus or contain an outbreak.

Limited testing means the virus may be able to spread unchecked until people show symptoms.

More than 70 million people worldwide have been forced out of their homes, according to the U.N. refugee agency, although the vast majority do not live in camps.

Here’s a look at the areas of greatest concern.

 A health worker walks wearing a hazmat suit at the Kutupalong Rohingya refugee camp in Cox's Bazar, Bangladesh.

BANGLADESH

More than a million Rohingya Muslims from neighboring Myanmar are packed into the world’s largest refugee camp in Bangladesh.

 Most fled a scorched-earth campaign by Myanmar’s government and Buddhist mobs in 2017. Aid workers are rushing to build isolation wards.

SYRIA

The nearly 10-year civil war has displaced half of Syria’s population of 23 million.

The northwestern Idlib province, home to 4 million people, has just one small health facility equipped to receive suspected coronavirus cases.

Authorities have conducted around 200 tests, all of which came back negative.

 Aid workers demonstrate to Syrian children how to properly wash hands.

IRAQ

Iraq is home to some 1.4 million people displaced by the war against the Daesh, many of whom reside in camps.

No coronavirus cases have been detected in the camps, but aid agencies have struggled to provide services amid restrictions imposed to prevent the virus' spread.

AFGHANISTAN

Decades of war have displaced millions of Afghans, and most fled to neighbouring Iran and Pakistan.

 Iran is battling the deadliest coronavirus outbreak in the Middle East.

The International Organization of Migration says 200,000 Afghans have returned from Iran this year, as the outbreak there accelerated.

That could potentially contribute to the spread of the virus in Afghanistan, which is still mired in conflict and poverty.

 A Rohingya refugee woman holds an umbrella as she waits to collect food aid at the Kutupalong refugee camp.

SOUTH SUDAN

In South Sudan, more than 180,000 people live in crowded U.N.-run camps across the country after a five-year civil war ended in 2018.

South Sudan has reported just four cases, with none inside the camps, but one was a woman who had been in the country for five weeks.

SOMALIA

More than 2.2 million people live in displacement camps after being uprooted by cycles of drought and the ever-present threat of Extremists.

 Another 400,000 Somalis live in two sprawling refugee camps in neighbouring Kenya. There is no testing in either camp, nor are there ventilators.

CONGO

More than 5 million people have been uprooted by conflict within Congo's borders, and more than half a million refugees have fled there from neighbouring countries.

  Plastic containers belonging to displaced people sit queued up in lines, waiting their turn to be filled with water from a well.

 Violence in the east has displaced thousands, even as the region has grappled with an Ebola outbreak that has killed more than 2,260 people.

VENEZUELA

Nearly 5 million Venezuelans have fled economic collapse, crossing by foot and bus into neighboring Colombia and other countries in one of the largest migrations in the world today.

Many of the migrants live in crowded apartments in Bogota, which has the bulk of Colombia’s virus cases, and work as street vendors - jobs now prohibited.