Pfizer Says Trials Suggest Its Coronavirus Vaccine Is 90 Effective

U.S. drugmaker Pfizer said Monday that human trials suggest its coronavirus vaccine is 90% effective at preventing COVID-19 infections in people not known to have had the virus already. Dr. David Agus joins "CBS This Morning" to discuss what this means and what is expected to happen next.

  • Pfizer says trials suggest its coronavirus vaccine is 90% effective ( Download)
  • Pfizer Says Its Coronavirus Vaccine Is 90 Percent Effective | TODAY ( Download)
  • Coronavirus vaccine: Pfizer's vaccine trials show a vaccine that is 90% effective ( Download)
  • Pfizer says COVID-19 vaccine trials are 90% effective ( Download)
  • Pfizer says early data suggest its coronavirus vaccine is 90% effective ( Download)
  • Pfizer says Coronavirus vaccine is 90 percent effective ( Download)
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  • Pfizer says its vaccine is 90% effective ( Download)
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  • Pfizer Says Early Analysis Shows Its Covid-19 Vaccine Is 90% Effective ( Download)
  • Pfizer Reveals Early Results From Coronavirus Vaccine Trials Show Its 90% Effective ( Download)