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Comment by refurb | Hacker News Reader

This is the big reason why you don't need to test everyone - the results of the test change nothing.

If you have a mild case of Coronavirus and are able to self-isolate, then just do it. Testing and confirming you have it doesn't change things, you'd still be asked to self-isolate.

I can see the value in people who are very sick - confirming they have the virus can inform the need for isolation in the hospital.

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But how does anyone know they have a mild case of Coronavirus? It looks just like the cold or flu. Now that there's community spread, you can't assume that you only have Coronavirus if you've recently traveled or had contact with someone with confirmed Coronavirus. People who think they just have the cold or flu are going to maybe stay home a day or two, not self-quarantine for 2 weeks.

A positive test result would indicate to a person that they should remain in isolation for a week or so (or whatever the current recommendation is) after they get better, and not return to work immediately.

It might also be useful to have a diagnosis to present to an impatient boss who wants you back at work.

I think the point is, if it becomes endemic, people should self-quarantine even in the absence of a positive test.

That's what my employer is doing now. If you're sick, work from home for 2 weeks. Don't come in.

Deciding whether to visit elderly relatives?

the results of the test indicate whether quarantine and contact tracing are useful.

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