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.