1 hr 19 min ago 3 in 10 adults last year said they wouldn't get a Covid-19 vaccine, poll finds From CNN's Ryan Prior Nearly 1.3 billion adults globally in 2020 said they would not get a Covid-19 vaccine if one were offered to them at no cost, according to a new Gallup poll released on Monday. The poll, which surveyed more than 300,000 people across 117 countries last year, showed that 68% of adults worldwide would get a vaccine if one were offered to them for free. Some 29% of those polled said they would opt out of vaccination, and another 3% said they did not know. That global average falls below the range required for a herd immunity to the novel coronavirus, which experts have estimated as falling between 70% and 85%.