"The sheer numbers of homes impacted are alarming," says Rebecca Morley, executive director of the National Center for Healthy Housing, a non-profit research group that used Census Bureau data for the study.
DATABASE: See state of housing in your area
"It is a wake-up call," says Ron Sims, deputy secretary of the Department of Housing and Urban Development. "The report validates what we've been saying at HUD, that we need to restore homes. … You can't be healthy if your house is sick." Read full from USA Today