Facebook said on Thursday it has pushed back its office return date for all U.S. also, some international employees until January because of worries over the highly infectious Delta variant.

“Given the new wellbeing information showing rising COVID cases dependent on the Delta variant, our groups in the U.S. won’t be needed to return to the workplace until January 2022,” the company said.

The company additionally added that it is observing the circumstance and working with specialists to focus on the security of every one of its employees before they get back to the workplace.

Companies across the United States have fixed their defenses against the virus. Last month, large technology companies including Facebook just as Google asked U.S. employees to get vaccinated to venture into workplaces, while Twitter said it was closing its resumed workplaces in the country.

Amazon has additionally requested all U.S. employees to wear a mask at work paying little mind to their vaccination status.