AdPfizer is also reportedly on track to ship out 200 million vaccine doses by the end of May this year, two months ahead of their original schedule, Bourla said. To help offer more flexibility to vaccination centers across the country, Bourla says Pfizer is also improving the longevity of stored vaccine doses with a new storage option. Following his tour of Pfizer’s largest manufacturing site, addressing the nation, President Biden thanked the Pfizer employees for their role in producing hundreds of millions of doses of the much-needed coronavirus vaccine. That’s how to beat this pandemic.”Michigan Governor Gretchen Whitmer joined President Biden on a tour of the Pfizer facility Friday, her team announced hours after the event. Several shipments of coronavirus vaccines produced by Pfizer and Moderna have also been delayed to Michigan and other states this week due to severe weather conditions.