@alex_lanstein @jeremyfaust Minimal contact tracing, often none at all.
@alex_lanstein@JeremyFast最小联系人追踪，通常根本没有。
@alex_lanstein @jeremyfaust Minimal contact tracing, often none at all.
@alex_lanstein@JeremyFast最小联系人追踪，通常根本没有。