What do we know about the COVID-19 (coronavirus) vaccine?
Moderna, one of the companies leading the race to create a COVID-19 vaccine, has already agreed prices for its sale.
Moderna has made deals with other countries to sell the vaccine for $32 to $37 per dose. Moderna CEO has said these prices reflected "smaller volume agreements." But the company has been developing its vaccine using hundreds of millions of dollars' worth of US federal aid.