She was found guilty by a series of partial verdicts, delivered several days apart, with the judge issuing reporting restrictions until the end of the trial.
Letby cried during some of the verdicts, while families of her victims sobbed and comforted each other as the jury read out its findings. One member of the jury also cried and held her head in her hands.
She was also found not guilty of two charges of attempted murder. The jury was unable to reach verdicts on six further counts of attempted murder.
Letby's mother, Susan, broke down sobbing as her daughter was led away from the dock, whispering "you can't be serious, this can't be right," into her husband's arms.