Key takeaways: 

• Meta Platforms and Microsoft reopened their U.S. offices to workers this week.
• California-based Apple and Meta had urged employees to receive booster shots, but they have not proven famous with the state’s citizens.

Facebook parent Meta Platforms will stop demanding that employees have Covid booster shots to come to its facilities in the U.S., a representative confirmed to CNBC on Friday.

Technology firms have started drawing their employees back to their corporate campuses. Meta, as well as Microsoft, kept broad U.S. office reopenings on Monday.

“We revised our conditions in early March to align with CDC guidance, and now Covid-19 boosters are no longer needed for access, though extremely recommended,” the representative wrote in an email. 

“The primary vaccination need (one or two-shot series) stays in place.”

The about-face comes less than three months after the social network operator declared regulations for a return to the office.

The Meta representative did not justify the change.

According to New York Times data, in California, where Meta has its center, 71% of the people are entirely vaccinated, while 35% have got a booster shot. Case totals have dropped since January, the newspaper’s data shows.

Apple, also based in California’s San Francisco Bay Area, needs employees to confirm they have got a booster shot, technology news website the Verge reported in January.

ON TUESDAY, the U.S. Food and Drug Administration approved a second Pfizer-BioNTech or Moderna booster shot for individuals who are 50 or older at least four months after getting a booster.