DeKalb County Health Department Protect your Child from Lead Exposure 123 Children younger than 6 years of age are most vulnerable to lead poisoning. www.health.dekalbcounty.org SM-CL2239900 DeKalb County Health Department Protect your Child from Lead Exposure 123 Children younger than 6 years of age are most vulnerable to lead poisoning . www.health.dekalbcounty.org SM - CL2239900