Hurricane Harvey's leftover mould poses danger

It has been one month since Hurricane Harvey hit the southern US state of Texas, bringing with it nearly 130cm of rain to the city of Houston. While most of the water has receded, it has left destruction and the potential for disease in its wake. One of the most harmful problems is mould, which can cause a variety of ailments.

Al Jazeera's Diane Eastabrook reports from Houston, Texas.

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