Zimbabwe is retrieving and burying bodies Wednesday as Mozambique begins three days of national mourning for victims of Cyclone Idai.

The death toll is rising in both countries, but the full number of those killed and damage done will only be known when torrential floodwaters recede. Persistent rains are forecast through Thursday so it will be days before the plains of Mozambique drain toward the Indian Ocean.

Zimbabwe President Emmerson Mnangagwa is to visit on Wednesday the hard-hit mountain community of Chimanimani on the eastern border with Mozambique. Some 300 people may have died in Zimbabwe as a result of the cyclone, say officials.

Luckymore Rusero and his family walk past a collapsing road in Chimanimani, southeast of Harare, Zimbabwe, Monday, March 18, 2019. (AP PhotoTsvangirayi Mukwazhi)

Luckymore Rusero and his family walk past a collapsing road in Chimanimani, southeast of Harare, Zimbabwe, Monday, March 18, 2019. (AP PhotoTsvangirayi Mukwazhi)

Mozambican officials say its death toll is 200 and rising. Mozambican President Filipe Nyusi said earlier this week he expects fatalities to be more than 1,000.

People wait in a queue to receive food supplies from soldiers in Chimanimani, about 600 kilometers southeast of Harare, Zimbabwe, Monday, March 18, 2019. (AP PhotoTsvangirayi Mukwazhi)

People wait in a queue to receive food supplies from soldiers in Chimanimani, about 600 kilometers southeast of Harare, Zimbabwe, Monday, March 18, 2019. (AP PhotoTsvangirayi Mukwazhi)

A woman makes her way to a school building being used as an emergency shelter for some 300 local people who are unable to return to their homes following cyclone force winds and heavy rain in the coastal city of Beira, Mozambique, Sunday March 17, 2019.  More than 1,000 people are feared dead in Mozambique four days after a cyclone slammed into the southern African country destroying vulnerable residential areas. (Josh EsteyCARE via AP)

A woman makes her way to a school building being used as an emergency shelter for some 300 local people who are unable to return to their homes following cyclone force winds and heavy rain in the coastal city of Beira, Mozambique, Sunday March 17, 2019. More than 1,000 people are feared dead in Mozambique four days after a cyclone slammed into the southern African country destroying vulnerable residential areas. (Josh EsteyCARE via AP)