Dr. Scott Atlas' tweet was quickly debunked by multiple experts. Photo / AP
For months, public health experts — backed by guidelines from the World Health Organisation and the Centers for Disease Control and Prevention — have stood firm on one resounding refrain: Against the coronavirus, masks work.
But on Saturday, Dr. Scott Atlas, one of President Donald Trump's most prominent science advisers,
took to Twitter to say otherwise.
"Masks work? NO: LA, Miami, Hawaii, Alabama, France, Philippines, UK, Spain, Israel," Atlas tweeted, rattling off a list of locations where masks had, in his view, failed to protect large swaths of the population.
The tweet was rapidly debunked by experts, who pointed to a wealth of evidence showing that face coverings reduce the risk that the coronavirus will hop from person to person. Masks, they've said, cut down on the amount of virus that is sprayed out of an infected person's airway. They might also thwart inbound virus by loosely shielding the wearer's nose and mouth.
Not long after, Atlas re-shared his first tweet with a message that seemed to walk back his original statement: "Use masks for their intended purpose — when close to others especially hi risk," he said. "Otherwise, social distance. No widespread mandates."