The program continued under a different classified name. Spears gave testimony of abuse by various doctors during her trial. You’ll have to decide for yourself if you think this is related to mk-ultra or not, but many do. There’s also circumstantial evidence surrounding the Mickey Mouse Club and widespread abuse of child actors stretching back decades including everyone’s favorite intelligence asset: the late great Jeffery Epstein.
https://www.npr.org/2021/06/24/1009858617/britney-spears-tra...