This is a very interesting point and something I've been tracking for a while. I guess if you are going for elimination then 14 days might make sense, but elimination comes at a massive cost to the economy and social fabric and is probably not possible in all but a few locations. If you are going for containment and managing the disease in the context of other economic and social imperatives then a shorter quarantine would make much more sense IMHO.

I base this view on information contained here (https://www.worldometers.info/corona...bation-period/) in short, two studies showed the median incubation period as being 4 days (in one study) and 5.2 days (in another). This is a median and there are obviously outliers on both sides. Let's call it a 4 day median. This is supported by Australia's own experience where a lockdown was announced on Sunday and the first fall in figures was observed on the Thursday (4 days later).

So I'm suggesting a 7 day quarantine maybe the most practical in a containment strategy balancing medical, social and economic factors. Enforce it at home backed by random police checks, an app and harsh penalties and some form of test at the end might be a useful gateway to "freedom".

This is actually a manageable approach that may allow a limited reintroduction to tourism, family reunions and commerce.

One number I haven't seen, and I would be very interested in knowing, is in all the quarantining that is happening through the world, what percentage has exited without symptoms vs those that have developed symptoms during the quarantine period.