The Food and Drug Administration has issued emergency use authorizations for two monoclonal antibody treatments for COVID-19 – one produced by Eli Lilly and another by Regeneron. But emergency use authorization doesn't assure the drugs are effective.In this episode of Short Wave)*, *NPR's daily science podcast, science correspondent Richard Harris) explains how the new treatments work — and whether they could really make a difference for patients with COVID-19. Listen to more episodes of Short Wave on Apple Podcasts) or Spotify).Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)