Retail giant Walmart allows vaccinated shoppers and employees to go maskless in the US
Walmart is the nation’s largest employer with roughly 1.5 million workers in the US
As an incentive, Walmart said it is offering workers $75 if they prove they’ve been vaccinated
Workers will need to prove they are vaccinated to go maskless
On Tuesday, centres for Disease Control and Prevention eased mask-wearing guidelines for vaccinated people
Fully vaccinated people can now stop wearing masks outdoors in crowds and most indoor settings
