Ramping up production is especially challenging for Pfizer and Moderna, whose vaccines use an mRNA technology that’s never been mass-produced before.
Why We Can’t Make Vaccine Doses Any Faster | ProPublica
Ramping up production is especially challenging for Pfizer and Moderna, whose vaccines use an mRNA technology that’s never been mass-produced before.
Why We Can’t Make Vaccine Doses Any Faster | ProPublica