On Friday Meta Platforms confirmed that they will stop requiring employees to have a COVID booster shot to come into their facilities. Their primary vaccination requirement will remain in place. A spokesperson for the company wrote, “We updated our requirements in early March to align with CDC guidance, and now COVID-19 boosters are no longer required for entry, though strongly recommended.” According to New York Times data, in California where the company's headquarters is, 71% of the population is vaccinated while only 35% have received a booster shot.
See "Meta will no longer require workers to get boosted", Jordan Novet, CNBC, April 4, 2022