Nearly 2 years after developing a vaccine, Pfizer's Angela Hwang said in-person work is essential for workplace culture. Though many worked from home developing the vaccine, Pfizer's culture was "banked" from years of in-person work, she said. Some companies have recently faced backlash for requiring in-person work. Now, nearly two years after Pfizer and other drugmakers introduced effective vaccines against the virus, requiring workers to return to the office doesn't seem as far-fetched. "Remote working is effective for certain kinds of work," she said.

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