Press Release - Globally, half of all preventable harm in medical care is medication related, a quarter of which is severe or life-threatening. In the lead up to World Patient Safety Day on 17 September 2022, WHO is emphasizing the global burden of medication harm. The elderly population is one of the most at-risk groups of medication harm, especially those taking multiple medications. High rates of medication-related harm are also seen in surgical care, intensive care and emergency medicine.