Experts say people younger than age 50 should be allowed to leave their homes amid the coronavirus lockdowns.
People over 50 should be quarantined in their homes or face fines if they can't prove their age while out and about.
A Warwick University study found that a "rolling age-release strategy" was the best option to ease the quarantine restrictions and allow people to return to work.
The strategy is based on the high percentage of deaths among coronavirus victims older than 50. The study's author wrote that police should be given powers to fine people if they can't prove their age.
The study, based on Chinese data, said adults over 50 would be allowed out of their homes when a vaccine becomes available next year.
"Our risk graphs... show very clearly that younger people are at far less risk of dying from COVID-19 than older citizens," said Andrew Oswald, a professor at Warwick.
"Any lockdown release policy that does not design itself around this "Age gradient" in human coronavirus risk will have dangerous consequences," he said.