This is why Pfizer can’t provide more Covid-19 vaccines faster

Vaccine supply constraints are complicating the Trump administration’s hopes of striking a deal with Pfizer to purchase another 100 million doses of the company’s coronavirus vaccines, the latest hurdle to ramping up vaccine production as the virus rapidly spreads.

Vaccine supply constraints are complicating the Trump administration’s hopes of striking a deal with Pfizer to purchase another 100 million doses of the company’s coronavirus vaccines, the latest hurdle to ramping up vaccine production as the virus rapidly spreads.