The most common high-dose sources of lead exposure for U. S. children are lead-based paint and lead-contaminated 
house dust and soil. Hence, prevention and management of Blood Lead Levels (BLL) is needed to eliminate childhood poisoning. Below is an article that will describe you with CDC’s Blood Lead Level of Concern on Adverse Health Effects for young children.
What you will see in the article are sections discuss about Preventing Childhood Lead Poisoning in the United States, Responding to Data on Adverse Health Effects at Blood Lead Levels <10 ug/dL from a Public Health Perspective, and The CDC Recommendations (Changes in the Focus of CDC-Funded Programs, Recommendations to Federal, State, and Local Government Agencies, to Health-Care Providers and Community-Based Health and Social Service Agencies).
You will also be provided with an appendix describes evidence of adverse health effects associated with Blood Lead Levels <10 ug/dL in children. This appendix consist of materials such Studies Relating Postnatal Lead Exposure to IQ (General Cognitive Index), Biologic Plausibility, Blood Lead Measurement, Blood Lead-Effect Relations in Children, Quality of Neurobehavioral Assessments, and etc.
Please follow on complete read of The Adverse Health Effects Associated with Elevated Children Blood Lead Levels in this Lead Poisoning Article here (source: cdc.gov)
