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Why Vir Biotechnology Stock Is Sliding Today

Efficacy results for oral antivirals from Pfizer and Merck are weighing heavily on Vir today.

By Cory Renauer Updated Nov 5, 2021 at 3:03PM EST

Key Points

  • Sales of sotrovimab in the third quarter weren't bad, but news from Pfizer doesn't bode well for the infused antiviral drug.
  • Pfizer's oral COVID-19 treatment Paxlovid looks even more effective than molnupiravir from the partners Merck and Ridgeback Biotherapeutics.
  • As an infused treatment, sales of sotrovimab could stall once easy-to-administer oral treatments become widely available.

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