US Health and Human Services Secretary Robert F. Kennedy Jr. has fired two of his top aides in an abrupt shakeup of the leadership at the nation’s sprawling health department, two people familiar with the matter told CNN.

U.S. Health and Human Services Secretary Robert F. Kennedy Jr. has fired two top leaders at the department, chief of staff Heather Flick Melanson and deputy chief of staff for policy Hannah Anderson,

Health Secretary Robert F. Kennedy Jr. has fired two top deputies at the Department of Health and Human Services, ABC News has learned. Heather Flick Melanson, Kennedy's chief of staff, and Hannah Anderson, deputy chief of staff of policy, are departing, according to a department spokesperson and another person familiar with the decisions.