Severe flooding has killed at least 61 people, displaced nearly 800,000 and inundated thousands of homes across a third of Bangladesh, government officials said on Tuesday, after two weeks of heavy monsoon rains.

Nearly 3 million people are struggling with flooding, the worst in two years, according to the disaster management and relief ministry.

As water levels began to recede, authorities expressed concern about outbreaks of infectious diseases in the country of more than 160 million.