What happened Shares of Pfizer (NYSE: PFE) and BioNTech (NASDAQ: BNTX) climbed on Friday after the pharmaceutical giant and biotech said they would request Emergency Use Authorization (EUA) for their experimental coronavirus vaccine. As of 11:15 a.m. EST, Pfizer's and BioNTech's stocks were up 1.2% and 6.7%, respectively. So what Pfizer and BioNTech will submit an EUA request to the U.S. Food and Drug Administration (FDA) today. The companies said they've already made similar requests to health regulators in international markets, such as Canada, the U.K., and Japan. Pfizer and BioNTech's vaccine candidate, BNT162b2, could be as much as 95% effective at preventing COVID-19, as demonstrated by their phase 3 clinical trial results. Better still, no serious safety concerns have been observed in the study's participants to date. Pfizer and BioNTech are seeking Emergency Use Authorization for their coronavirus vaccine candidate. Image source: Getty Images. "Our work to deliver a safe and effective vaccine has never been more urgent, as we continue to see an alarming rise in the number of cases of COVID-19 globally," Pfizer CEO Albert Bourla said in a press release. "Filing in the U.S. represents a critical milestone in our journey to deliver a COVID-19 vaccine to the world and we now have a more complete picture of both the efficacy and safety profile of our vaccine, giving us confidence in its potential." Now what If the FDA grants an EUA in the coming weeks, Pfizer and BioNTech could potentially make their vaccine available to Americans who are deemed to be at high-risk of contracting COVID-19 by the end of December. The healthcare companies have been ramping up their manufacturing and distribution capabilities so as to be able to produce up to 50 million doses worldwide in 2020 -- and up to 1.3 billion doses by the end of 2021. They stand ready to distribute their vaccine candidate "within hours after authorization." "Filing for Emergency Use Authorization in the U.S. is a critical step in making our vaccine candidate available to the global population as quickly as possible," BioNTech CEO Ugur Sahin said. "We intend to continue to work with regulatory agencies worldwide to enable the rapid distribution of our vaccine globally." 10 stocks we like better than PfizerWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and Pfizer wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of October 20, 2020 Joe Tenebruso has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.Source