(FILES) In this file photo taken on March 19, 2021, the Emergency Operations Center at the Centers for Disease Control and Prevention in Atlanta, Georgia. – The US Centers for Disease Control and Prevention is investigating 109 childhood cases of a mysterious form of hepatitis, including five reported deaths, the agency said on May 6, 2022. “Investigators both here and abroad and around the globe are working hard to determine the cause,” said Jay Butler, deputy director for infectious diseases for the CDC. (Photo by Eric BARADAT / AFP)