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			 A Biden administration official with knowledge of the contract said 
			that as part of the agreement, Pfizer will provide the United States 
			with 65 million doses intended for children under 12, including 
			doses available immediately after the vaccine is authorized for that 
			age group. 
			 
			The U.S. government also has the option to buy an updated version of 
			the vaccine targeting new variants of the virus. 
			 
			The deal comes as the Delta variant of the coronavirus sweeps across 
			the country and drives up infections, contributing to the debate 
			over whether or not Americans will need a booster dose this fall. 
			 
			It also follows the government's move in June to buy 200 million 
			more doses of Moderna Inc's COVID-19 vaccine. 
			 
			The purchase brings the total number of doses of the Pfizer/BioNTech 
			vaccine to be supplied to the United States to 500 million, of which 
			roughly 208 million doses have already been delivered, as of 
			Thursday's data from the government. 
			 
			"These additional doses will help the U.S. government ensure broad 
			vaccine access into next year," Pfizer Chief Executive Officer 
			Albert Bourla said in a statement. 
			 
			Pfizer last year signed a deal with the U.S. government for 100 
			million doses of the vaccine for nearly $2 billion, with an option 
			to buy 500 million more doses. 
			 
			A majority of the new doses will be supplied by the end of the year, 
			and the remaining 90 million will be delivered by April 30, the 
			companies said. 
			
			  
			
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			  Pfizer and BioNTech have 
								designed a new version of their vaccine 
								targeting the Delta variant, which they plan to 
								test in the coming weeks, but have said the 
								current vaccine could also provide protection 
								against the variant. 
								 
								Pfizer earlier this month said the companies 
								plan to seek authorization from U.S. and 
								European regulators for a booster dose of their 
								COVID-19 vaccine. 
								 
								The U.S. government has said Americans who have 
								been fully vaccinated do not need a booster 
								COVID-19 shot at this time. 
			
			  Advisers to the U.S. Centers for Disease Control 
								and Prevention on Thursday considered evidence 
								suggesting that a booster dose of COVID-19 
								vaccines could increase protection among people 
								with compromised immune systems. 
								 
								CDC scientists told advisers that boosters for 
								the immunocompromised would need to wait for 
								regulatory action from the U.S. Food and Drug 
								Administration - either full approval of 
								vaccines or amendments to their current 
								emergency use authorizations - before the CDC 
								could make a recommendation. 
								 
								(Reporting by Manas Mishra in Bengaluru and 
								Michael Erman in New Jersey; Editing by Sriraj 
								Kalluvila, Maju Samuel and Dan Grebler) 
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