In a significant move for child health safety, the FDA has opened a safety review of two injectable drugs aimed at protecting babies and toddlers from respiratory syncytial virus (RSV), a leading cause of hospitalization for young children in the U.S. The drugs, developed by Merck and Sanofi, function not as vaccines but as laboratory-made antibodies to help the immune system fend off RSV infections. Both companies reported no new safety signals, insisting on transparency during this review process. This scrutiny comes at a time when health officials are re-evaluating routine childhood vaccination policies, stirring conversations about vaccine safety. RSV typically affects infants and can pose serious health risks, making these drug treatments a vital resource for vulnerable children.