CNN closed its offices over the weekend as COVID-19 cases have recently increased in the United States, according to the cable station in a Saturday announcement. Only employees who must work onsite will be allowed in its U.S. offices and have to remain masked regardless of vaccination status, said CNN President Jeff Zucker in a memo to workers. “We are doing this out of an abundance of caution,” Zucker said, reported Reuters. “And it will also protect those who will be in the office by minimizing the number of people who are there.” The directive was confirmed by CNN commentator Brian Stelter in a Twitter post on Saturday. “Like other major media companies, CNN is making changes due to the new Covid surge,” Stelter quoted the memo as saying. The directive “essentially” means CNN is going “back to 2020 protocols” around COVID-19, Stelter said. Earlier this year, CNN executives issued a rule …