Several countries, including the U.S., have identified or are investigating unexplained hepatitis cases in children. While the reported cases are appearing in clusters, they remain rare. About 200 children are affected worldwide.
"What we're hearing from the places that are reporting these cases is that there are some children — usually previously healthy kids without underlying medical conditions — who have been admitted to hospital with severe hepatitis or severe inflammation of their liver," says Dr. Nipunie Rajapakse, a Mayo Clinic pediatric infectious diseases specialist.
The Centers for Disease Control and Prevention issued a nationwide health alert asking parents and health care professionals to be on the lookout for symptoms and report any potential hepatitis cases without known cause to local and state health departments.