Formaldehyde risks in trailers confirmed

Even though levels of formaldehyde vary widely among FEMA trailers and some trailer inhabitants are less affected by the colorless gas than others, all residents are encouraged to move into "safer housing as soon as possible," preferably before the summer, said Julie Gerberding, the director for the Centers for Disease Control and Prevention.

The agency recently completed a study that found that "in many trailers, mobile homes and park models tested, formaldehyde levels were elevated relative to typical levels of U.S. indoor exposure."

Ventilation, the age of the trailer and the temperature affect the levels of formaldehyde, she said.

"When the temperature is warmer, the levels are higher," Gerberding said.

A summary of the study's conclusions acquired by The Times-Picayune does not elaborate on the precise health risks resulting from temporary or prolonged exposure to formaldehyde, but Gerberding noted that the "really old, the really young and those suffering from asthma" are more susceptible to its effects.

The pungent gas is released by building materials and household items -- including paint, draperies and pressed wood products -- according to the Environmental Protection Agency.

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