Hundreds of Cases, But No Lockdown: What’s Changed in Japan?

As of Monday, the ratio of cases in Tokyo whose infection path can’t be identified stood at 39%, compared with more than 70% at the height of the pandemic. That’s significant because contact tracing and cluster-busting has been the core of Japan’s response to the virus -- identifying and shutting down locations where multiple people were infected, and aggressively testing those linked to these clusters.