The FDA Just Approved an RSV Vaccine -- and It Isn't From Moderna or Pfizer

Moderna (NASDAQ: MRNA) and Pfizer (NYSE: PFE) are two healthcare companies aiming to produce a vaccine for the respiratory syncytial virus (RSV). In trials, their vaccine candidates have been proving highly effective, and it may not be long before these COVID-19 vaccine makers are fighting for market share again -- this time in the RSV market. The Food and Drug Administration (FDA) recently approved an RSV vaccine, and it wasn't from either of these two companies.