Beverley Allitt , now 49, was convicted of killing four children while working as a nurse at Grantham and Kesteven Hospital, Lincs, in 1991. She is being held at Rampton high-security hospital and is said to be receiving 24 hour care after falling ill on Sunday. A source told The Sun: There are genuine concerns as to whether shell pull through. Allitt took her first victim, eight-week old Liam Taylor, in February 23, 1991 after she injected the child with a fatal amount of insulin.