Cyclone Idai made landfall in southern Africa on March 14, affecting Mozambique, Zimbabwe and parts of Malawi.

UN officials estimate that severe flooding triggered by the cyclone has affected 1.5 million people in Mozambique and Malawi.

Initial assessments in the three countries suggested hundreds of people were killed, the International Federation of Red Cross and Red Crescent Societies said.

But President Filipe Nyusi of Mozambique said the death toll may be much higher.

Children pick up books left to dry after Cyclone Idai damaged their school in Inchope, Mozambique, on March 25.
Children pick up books left to dry after Cyclone Idai damaged their school in Inchope, Mozambique, on March 25.
Tsvangirayi Mukwazhi/AP
Survivors of the cyclone cross a temporary foot bridge to receive aid in Chipinge, Zimbabwe, on March 25.
Survivors of the cyclone cross a temporary foot bridge to receive aid in Chipinge, Zimbabwe, on March 25.
Philimon Bulawayo/Reuters
The displaced sleep under a mosquito net at a school housing survivors in Beira, Mozambique, on Sunday, March 24.
The displaced sleep under a mosquito net at a school housing survivors in Beira, Mozambique, on Sunday, March 24.
Phill Magakoe/AP
Children eat at a school housing the displaced in Beira, Mozambique, on March 24.
Children eat at a school housing the displaced in Beira, Mozambique, on March 24.
Phill Magakoe/AP
People unload relief supplies from a helicopter in Chimanimani, Zimbabwe, on March 24.
People unload relief supplies from a helicopter in Chimanimani, Zimbabwe, on March 24.
Tafadzwa Ufumleli via ZUMA Wire
Veronica Fatia carries her 2-year-old daughter as they travel in a boat to Buzi district outside Beira, Mozambique, on Saturday, March 23.
Veronica Fatia carries her 2-year-old daughter as they travel in a boat to Buzi district outside Beira, Mozambique, on Saturday, March 23.
Themba Hadebe/AP
Men watch the arrival of a boat carrying displaced families rescued from a flooded area of Mozambique's Buzi district on March 23.
Men watch the arrival of a boat carrying displaced families rescued from a flooded area of Mozambique's Buzi district on March 23.
Themba Hadebe/AP
Displaced families arrive after being rescued from a flooded area of Buzi district in Mozambique on March 23.
Displaced families arrive after being rescued from a flooded area of Buzi district in Mozambique on March 23.
Themba Hadebe/AP
Jessica Mhonderi stands in front of what used to be her son's home in Chimanimani, Zimbabwe, on March 23.
Jessica Mhonderi stands in front of what used to be her son's home in Chimanimani, Zimbabwe, on March 23.
KB Mpofu/AP
Men try to salvage appliances from a house damaged by the cyclone in Chimanimani, Zimbabwe, on March 23.
Men try to salvage appliances from a house damaged by the cyclone in Chimanimani, Zimbabwe, on March 23.
KB Mpofu/AP
People unload from a boat in Beira, Mozambique, on Friday, March 22, after being rescued. Thousands remain stranded after Cyclone Idai hit.
People unload from a boat in Beira, Mozambique, on Friday, March 22, after being rescued. Thousands remain stranded after Cyclone Idai hit.
Andrew Renneisen/Getty Images
A child is transported via a refrigerator in flooding caused by Cyclone Idai in Buzi, Mozambique, on Thursday, March 21.
A child is transported via a refrigerator in flooding caused by Cyclone Idai in Buzi, Mozambique, on Thursday, March 21.
Siphiwe Sibeko/Reuters
A man carrying his belongings arrives at a school in Chimanimani, Zimbabwe, where the displaced are taking shelter, on March 21.
A man carrying his belongings arrives at a school in Chimanimani, Zimbabwe, where the displaced are taking shelter, on March 21.
Zinyange Auntony/AFP/Getty Images
A flooded area outside of Beira is seen on March 21. The area was hit by unprecedented flooding following the passage of Cyclone Idai.
A flooded area outside of Beira is seen on March 21. The area was hit by unprecedented flooding following the passage of Cyclone Idai.
Max Bearak/The Washington Post/Getty Images
People from the isolated district of Buzi take shelter in the Samora M. Machel secondary school used as an evacuation center in Beira on March 21.
People from the isolated district of Buzi take shelter in the Samora M. Machel secondary school used as an evacuation center in Beira on March 21.
Yasuyoshi Chiba/AFP/Getty Images
South Africa National Defense Forces personnel deliver relief aid in Buzi on March 20.
South Africa National Defense Forces personnel deliver relief aid in Buzi on March 20.
Adrien Barbier/AFP/Getty Images
A vehicle is submerged in floodwaters on March 21 after it got swept away by Cyclone Idai in Nyamatanda, Mozambique.
A vehicle is submerged in floodwaters on March 21 after it got swept away by Cyclone Idai in Nyamatanda, Mozambique.
Tsvangirayi Mukwazhi/AP
People cross a makeshift bridge over a river on Wednesday, March 20, that surged days earlier during Cyclone Idai in Chipinge, Zimbabwe.
People cross a makeshift bridge over a river on Wednesday, March 20, that surged days earlier during Cyclone Idai in Chipinge, Zimbabwe.
Tafadzwa Ufumeli/Getty Images
Residents stranded on the stands of a stadium in a flooded area of Buzi, Mozambique, on March 20.
Residents stranded on the stands of a stadium in a flooded area of Buzi, Mozambique, on March 20.
Adrien Barbier/AFP/Getty Images
Soldiers help residents retrieve their lost belongings on Tuesday, March 19, in Chimanimani, Zimbabwe.
Soldiers help residents retrieve their lost belongings on Tuesday, March 19, in Chimanimani, Zimbabwe.
Zinyange Auntony/AFP/Getty Images
A wounded survivor is evacuated by helicopter from Chimanimani on March 19.
A wounded survivor is evacuated by helicopter from Chimanimani on March 19.
Zinyange Auntony/AFP/Getty Images
A family digs on March 19 for their son who got buried in the mud when Cyclone Idai struck in Chimaniman.
A family digs on March 19 for their son who got buried in the mud when Cyclone Idai struck in Chimaniman.
Tsvangirayi Mukwazhi/AP
An elderly woman stands amid her destroyed belongings on March 19 in Chimanimani, an area on the border of Mozambique and Zimbabwe.
An elderly woman stands amid her destroyed belongings on March 19 in Chimanimani, an area on the border of Mozambique and Zimbabwe.
Zinyange Auntony/AFP/Getty Images
Locals stand at the edge of a damaged section of road between Beira and Chimoio, Mozambique, on March 19.
Locals stand at the edge of a damaged section of road between Beira and Chimoio, Mozambique, on March 19.
Adrien Barbier/AFP/Getty Images
Soldiers push a drum of jet fuel used for rescue operations in Chimanimani on March 19.
Soldiers push a drum of jet fuel used for rescue operations in Chimanimani on March 19.
Tsvangirayi Mukwazhi/AP
Mud fills the interior of a household in Chimanimani on March 19.
Mud fills the interior of a household in Chimanimani on March 19.
Zinyange Auntony/AFP/Getty Images
Residents search for bodies on March 19 in the Ngangu township of Chimanimani.
Residents search for bodies on March 19 in the Ngangu township of Chimanimani.
Zinyange Auntony/AFP/Getty Images
Survivors are escorted to safety by aid workers at the airport in Beira on March 19.
Survivors are escorted to safety by aid workers at the airport in Beira on March 19.
Adrien Barbier/AFP/Getty Images
A man closes improvised caskets at the morgue in Chimanimani on Monday, March 18.
A man closes improvised caskets at the morgue in Chimanimani on Monday, March 18.
Zinyange Auntony/AFP/Getty Images
Timber company workers stand on a damaged road on March 18 in Chimanimani.
Timber company workers stand on a damaged road on March 18 in Chimanimani.
Zinyange Auntony/AFP/Getty Images
Family members react to a child with broken limbs at the Chimanimani rural district hospital on March 18.
Family members react to a child with broken limbs at the Chimanimani rural district hospital on March 18.
Zinyange Autony/AFP/Getty Images
Damage is seen on March 18 at the airport in Beira in the aftermath of the passage of Cyclone Idai.
Damage is seen on March 18 at the airport in Beira in the aftermath of the passage of Cyclone Idai.
Deborah Nguyen/WFP/Getty Images
An aerial view of Praia Nova Village on Sunday, March 17. The village was one of the most affected neighborhoods in the coastal city of Beira.
An aerial view of Praia Nova Village on Sunday, March 17. The village was one of the most affected neighborhoods in the coastal city of Beira.
Josh Estey/CARE/AP
People carry their personal effects in the aftermath of Cyclone Idai in Beira on Friday, March 15.
People carry their personal effects in the aftermath of Cyclone Idai in Beira on Friday, March 15.
Denis Onyodi/AP