Which of the following is NOT a method by which kids can get lead poisoning?

The method described as "direct infusion" is not recognized as a way for children to experience lead poisoning. Lead poisoning primarily occurs through pathways of ingestion and inhalation. Ingestion can happen when children consume lead-contaminated substances, such as paint chips or dust, while inhalation can occur when lead particulates are in the air and are breathed into the lungs.

Touching contaminated surfaces can lead to ingestion if a child subsequently puts their hands in their mouth after contacting those surfaces. However, direct infusion implies a method of administering lead into the body, which is not a typical means of lead exposure in the context of lead poisoning. Therefore, "direct infusion" is not a common or relevant method of lead poisoning in children.