“About 30% of people in Stockholm have reached a level of immunity,” Karin Ulrika Olofsdotter told NPR. “We could reach herd immunity in the capital as early as next month.”…

There is no scientific proof, however, that people who have recovered from COVID-19 are actually protected from a second infection. The World Health Organization on Friday said the idea that one-time infection can lead to immunity remains unproven…

While the vast majority of Swedes approve of and follow the government’s guidelines, reports suggest that Stockholm’s residents have begun to break the rules as the weather gets warmer. The government swiftly responded by threatening to shut down any restaurant or bar that fails to implement adequate social distancing.

“I don’t want to see any full open-air restaurants in Stockholm or anywhere else. Otherwise, businesses will be closed,” Swedish Home Affairs Minister Mikael Damberg said on Friday.