The Centers for Disease Control and Prevention says it's investigating 180 pediatric patients with hepatitis of unknown cause. The cases, which have included five deaths, have been reported in 36 states and territories over the past seven months.
The count of cases under investigation has grown since the CDC's last update on May 5, when the agency said it was investigating 109 cases. But the agency said that most of the latest cases are "retrospective" cases — the CDC's investigation involves reported cases that date back to October 2021, and many of them are just now being reported.
