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A Simple Explanation of Why Home Antigen Testing is Effective

Isolation based on COVID symptoms is helpful and important, but far from perfect.
Contagion can happen before symptoms or without symptoms.
An inaccurate test (say, 30% false negatives) is likely more accurate than isolating based on symptoms.
Cheap quick (15 min) antigen tests accurately detect contagiousness (often 95%+).
Governments should make emergency allowance for antigen tests that are authorised for clinical use to be used at home. They’re easy to use.

I tried out a COVID antigen test for myself

Cheap COVID antigen tests are available with high specificity and sensitivity
They are easy to use and give results in 15 mins
In the EU, they are only approved for clinical use.
Government could greatly expand testing simply by allowing people to test at home.