Multiple fire crews respond to northeast London warehouse fire

Firefighters work at the scene of a warehouse fire in London, Ont. on Thursday, July 29, 2021. (Sean Irvine / CTV News) Firefighters work at the scene of a warehouse fire in London, Ont. on Thursday, July 29, 2021. (Sean Irvine / CTV News)

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U.S. FDA advisory panel rejects widespread Pfizer booster shots

An influential federal advisory panel overwhelmingly rejected a plan Friday to offer Pfizer booster shots against COVID-19 to most Americans, dealing a heavy blow to the Biden administration's effort to shore up people's protection amid the highly contagious delta variant.