Medical Genetics Following this, much stricter rules about drug testing were introduced and international monitoring programmes were put in place. Doctors are also much more cautious about prescribing drugs to women of child-bearing age, so it is unlikely that a disaster on this scale will occur again in the UKMedical Genetics Following this, much stricter rules about drug testing were introduced, and international monitoring programmes were put in place. Doctors are also much more cautious about prescribing drugs to women of child-bearing age, so it is unlikely that a disaster on this scale will occur again in the UK