Did Katrina-Rita trailers hurt kids' health?
RTI International of North Carolina will investigate whether children who spent at least two months in FEMA trailers after Hurricanes Katrina and Rita have more skin or breathing problems than those who didn't.
RTI will also study children whose mothers were pregnant with them while living in a trailer provided by FEMA.
Studies after Hurricanes Katrina and Rita found potentially harmful levels of chemicals including formaldehyde.
The researchers hope to sign up 500 families in Louisiana and Mississippi - 250 in each group.
After two years, the Centers for Disease Control and Prevention will decide whether RTI can expand
the study into Texas and Alabama and add another 1,000 children.
Each child would be followed for six years.