Among white evangelicals, pushback against Covid-19 vaccines has remained stubbornly high, with polls in recent months suggesting between 30% and 40% refused to get vaccinated, the highest proportion among any religious group surveyed. … [Francis] Collins sees the vaccine pushback coming from two places. “Much of it was triggered by social media conspiracies,” he said. “Some of it came from mixing politics with positions of faith, which I think when it comes to vaccines has been pretty unfortunate.”