KEY POINTS
  • 42 people in West Virginia received Regeron's Covid-19 monoclonal antibody treatment instead of the Moderna vaccine on Wednesday, the West Virginia National Guard said.
  • The National Guard said it learned of the "error" on Wednesday.
  • The antibody treatment, which is given through an infusion, is seen as a promising treatment for Covid-19 when administered early on after infection.
A pharmacist dilutes the Pfizer COVID-19 vaccine while preparing it to administer to staff and residents at the Goodwin House Bailey's Crossroads, a senior living community in Falls Church, Virginia, on December 30, 2020.

Dozens of people in West Virginia were mistakenly given Regeneron's Covid-19 antibody treatment instead of the Moderna vaccine, the West Virginia National Guard announced Thursday.

The state's National Guard said 42 people received the treatment, which is given intravenously, at a vaccination clinic staffed by the Boone County Health Department. The National Guard said it learned of the error on Wednesday.