A gunman opened fire at a birthday party in Colorado on Sunday, killing six adults before killing himself, police said.
This could explain blood clots in some COVID patients and other issues like "COVID feet", which are not classic symptoms of a respiratory illness.
The Facebook and Instagram accounts of former US President Donald Trump have remained suspended after a decision by the Oversight Board.
On the oddly scaled photo, the Bidens appear as giants looming over miniaturised versions of the Carters.
Air passenger numbers in the US are at their highest level since the COVID-19 pandemic set in.
Apple is heading into a trial that threatens to upend the app store that brings in billions of dollars each year.
Previous attempts to ban menthol cigarettes in the US faced pushback from lobbyists and members of Congress.
It comes as Beckham took part in a vaccine campaign as part of World Immunization Week.