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What COVID-19 Vaccines Could Mean For The Pandemic

A volunteer receives an injection in Soweto, Johannesburg, as part of Africa's first participation in a COVID-19 vaccine trial developed at the University of Oxford on June 24, 2020.
Siphiwe Sibeko
Pool via AP

This episode originally aired on Nov. 24, 2020.

The chief scientific adviser for Operation Warp Speed says that some Americans could start receiving a COVID-19 vaccine by mid-December.

Dr. Moncef Slaoui cautioned, however, that true herd immunity likely won’t be achieved until May of next year.

COSI president and CEO Dr. Frederic Bertley shares his take as an immunologist who has worked internationally in the field.


  • Dr. Frederic Bertley, immunologist and president and CEO, Center of Science and Industry (COSI)

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