Albert Bourla, Pfizer CEO (Evan Vucci/AP Images)
Covid-19 roundup: Pfizer to supply US with 200M more vaccines as UK study finds higher antibodies in 8-10 week intervals
The US government has purchased 200 million more doses of the Pfizer/BioNTech vaccine, the companies announced Friday morning.
Pfizer and BioNTech expect to deliver 110 …
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