Haiti has begun using mass graves to bury the dead in the aftermath of Hurricane Matthew as the death toll rose to 1,000 people.
The storm may have weakened but it still has wind gusts up to 120 kmph which is equivalent to that of a Cat 1 hurricane.
Motorists drive through the floodwaters from Hurricane Matthew washing over a highway near Rocky Mount, North Carolina. Government officials told Reuters on 9 October that they had started to bury the dead in mass graves in Jeremie as the bodies were beginning to decompose.
In Grand'Anse alone, 522 people were killed.
In the Virginia Beach region, the fire department reported downed power lines and trees in addition to the flooding. In the rest of the country, 92 people died, the same tally showed.
Officials were concerned that other cities could suffer the fate of Lumberton, a community of 22,000 people about 80 miles from the ocean.
Cholera causes severe diarrhea and can kill within hours if untreated.
Government teams fanned out across the hard-hit southwestern tip of the country over the weekend to fix treatment centers and reach the epicenter of one outbreak.
People use a handmade ladder after the bridge has been destroyed by Hurricane Matthew in Chantal, Haiti.
Emergency crews in boats rescued hundreds of people from floodwaters and plucked others from rooftops by helicopter in North Carolina as former hurricane Matthew flooded much of the US Southeast before weakening on Sunday and turning out to sea.
Matthew, the most powerful Atlantic storm since 2007, was downgraded to a post-tropical cyclone on Sunday after its rampage through the Caribbean killed 1,000 people in Haiti.
The storm was blamed for at least 11 deaths in the United States - five in Florida, three in North Carolina and three in Georgia.
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With five people reported missing and rivers rising, North Carolina Governor Pat McCrory said he expected the death toll to rise. The rivers were expected to crest early this week, with a few areas surpassing previous records.
Many coastal and inland communities remained under water from coastal storm surge or overrun rivers and creeks. "There are nurses but no doctors", he said, concerned that cholera will spread due to a lack of hygiene and as ground water moves because of rain and floods.
Deputies went from house to house to spread the word about the mandatory order.
State resources are stretched to their limit, McCrory said.
"The city of Savannah has already started to clean things up", Savannah resident Jordan Studdard told CNN. "Hurricane Matthew is feared to significantly worsen the situation and increase the risk of a larger outbreak", CERF said last Friday. It discontinued all tropical storm warnings.
In North Carolina, rising waters have damaged hundreds of buildings, forced thousands into emergency shelters, and left almost 600,000 customers without electricity headed into Monday.
Sections of Interstates 95 and 40 remained closed Sunday, and North Carolina Gov.
The other deaths occurred in North Carolina, with 10; Florida, four; SC, three; and Georgia, three.
McCrory said that the Federal Aviation Administration has placed temporary flight restrictions over the city.
David L. Outlaw, 66, drowned when his wheelchair got pinned down in standing water at a nursing facility's courtyard, Richland County Coroner Gary Watts said.
Ten people have died in the state, including one in a auto that was swept away by floodwaters in Johnston County on Sunday, McCrory said at an earlier news conference. As with Floyd, Matthew followed a prolonged period of rain in eastern and central North Carolina. Flooding has closed the road in several places between the SC state line and Dunn. He was part of a team from three states that carried out 64 rescues on Saturday night and Sunday morning.