Thursday, Oct 21, 2021 | Last Update : 07:50 AM IST

  World   Americas  09 Jul 2021

World, Americas, 09 Jul 2021

Pfizer pushes for third shot as variant drives global outbreaks

Delta is the most infectious strain of the virus since the start of the global pandemic in early 2020

09 Jul 2021 8:56 AM

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