Here are some of the biggest medical advances in 2023
New treatments include the first CRISPR gene-editing therapy, an Alzheimer’s drug and RSV vaccines
![A photo illustration of a package of Narcan](jpg/121623_ye_drugs-roundup_featb14e.jpg)
In March, the U.S. Food and Drug Administration said the nasal spray Narcan, which can reverse the effects of an opioid overdose, could be sold over the counter.
Justin Sullivan/Getty Images News