As far as I'm aware, contact tracing has never really stopped in Germany, despite the lockdown. Since both tracing (via local Gesundheitsämter) and testing (via

As far as I'm aware, contact tracing has never really stopped in Germany, despite the lockdown. Since both tracing (via local Gesundheitsämter) and testing (via lots of local labs) is distributed and not centralized, you can still effectively implement contact tracing in places where you're not overwhelmed. And there's lots of such places, despite the growing numbers. Unlike Italy, Spain, or the US, Germany wasn't hit that hard in a single area (except Heinsberg, but that happened to be right in the middle of a gigantic metropolitan area, so there's plenty of infrastructure to deal with that). Cases are spread out all over the country and so is testing and tracing capacity.