With thousands already homeless after the floods in Louisiana, the formation of mold threatens many others in the region, NBC News reported.
As many as 11 people were killed when unrelenting rain flooded the state beginning Aug. 13. Gov. John Bel Edwards called the disaster a "historic, unprecedented flooding event" after the storm system dropped three times as much rain on Louisiana as Hurricane Katrina, according to National Weather Service records.
And many more than the 60,000 residents already left homeless could lose their homes, too.
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"Mold removal is a top priority," the state Health Department said in the days following the floods.