San Francisco may have become the first major American city to hit herd immunity to the coronavirus, experts say. “That is what herd immunity looks like,” Rutherford said. Many experts now estimate that herd immunity will be achieved when 80 to 90% of residents have been vaccinated. San Francisco has been close to that target. “San Francisco has this long history of being open-minded and integrating academics and public health with its community and politics,” he said.

Source: The Guardian June 08, 2021 21:26 UTC