The rock star scientist has a track record of producing difficult vaccines against the odds. "Much of the work that Pfizer is celebrating this week is thanks to the leadership of Kathrin Jansen, head of vaccine research and development at Pfizer. Jansen has spearheaded the effort to get a COVID-19 vaccine market-ready. She’s been with Pfizer since 2009, when the company acquired Wyeth Pharmaceuticals, where she had been working on vaccines. Over the course of her multi-decade career, Jansen has proven to be something of a maverick." In Fast Company, Ruth Reader profiles one of the scientists that could change the course of the coronavirus pandemic forever.