Nearly a thousand people have been killed, and tens of thousands of homes, schools and hospitals have been destroyed in Bangladesh, India and Nepal.

“There is the possibility that the situation could deteriorate further as rains continue in some flood-affected areas and flood waters move south,” the UN Office for the Coordination of Humanitarian Affairs (OCHA) on Thursday said in an updated note.

In Bangladesh, nearly 2,000 local medical teams have been deployed, even as one-third of the country is reportedly underwater. Aid workers are concerned about waterborne diseases, such as diarrhoea and malaria.

“Their most urgent concern is to accessing safe water and sanitation facilities,” OCHA said earlier this week, citing national authorities.

It also warned of dangers to women and children, who are at increased risk for abuse, violence and sexual harassment.

In India, rescue operations are ongoing in many flood-affected areas, with those stranded being rescued by helicopter.

Flood relief camps have been established for those displaced by the disaster where they are being provided with food and shelter, OCHA said.

The Government recently announced additional funding for relief, rehabilitation, reconstruction and flood mitigation.

In addition to people suffering, Indian authorities also reported large parts of a famous wildlife reserve park destroyed, with endangered animals killed.