Health
Batch testing and contact tracing are the two keys to stop the lockdown yo-yo – Australian Times
The key to avoiding the need for lockdown (unless and until a vaccine is widely deployed) is to keep what epidemiologist call the “effective” reproduction rate (R) below 1.

Richard Holden, UNSW
Back in March and April I (and many other economists) argued for lockdowns to get COVID-19 infections under control and to give health systems time to put in place testing and tracing regimes to contain the virus in the longer term.
This was done pretty effectively everywhere in Australia except for Victoria. But if things go to plan, all states will be back on the same page by the end of October.
Or will they?
Concerns about Victorias contact-tracing regime remain, and …
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