AstraZeneca’s (LON:AZN) and Sanofi‘s (Nasdaq:SNY) nirsevimab had 75% efficacy against lower respiratory tract infections resulting from rr (RSV) in a Phase 3 study. There are currently few treatment options for lower respiratory tract infections stemming from RSV. Two antivirals, palivizumab and ribavirin, are available, while new vaccines are currently authorized. RSV is the most common…