"In the Coronavirus Fight in Scandinavia, Sweden Stands Apart"

https://www.nytimes.com/2020/03/28/world/europe/sweden-coronavirus.html

... Sweden's approach appeals to the public's self-restraint and sense of responsibility, Mr. Tegnell said. "That's the way we work in Sweden. Our whole system for communicable disease control is based on voluntary action. The immunization system is completely voluntary and there is 98 percent coverage," he explained.

"You give them the option to do what is best in their lives," he added. "That works very well, according to our experience."