An example from Australia: 2 separated parents with 2 young children in shared custody. Parent A, who believes in covid jabs, has jabbed the older child without the knowledge or consent of parent B, who does not believe in covid jabs. What can parent B do about this situation? How can parent B stop parent A from jabbing the younger child as well? How can parent B stop parent A from giving any further jabs (boosters) to the older child?