Virginia health officials say a child has died of a brain infection from a microscopic bug, sometimes called a “brain-eating amoeba,” that lives in stagnant water. State epidemiologist Dr. Keri Hall declined to name the child, but the victim’s mother identified him as 9-year-old Christian Alexander Strickland of Henrico County. The boy died Aug. 5 and Hall received the autopsy results Friday confirming the cause of death as inflammation of the brain and its lining.