Researchers at Stanford University who developed the test also determined that the vast majority of asymptomatic individuals who tested positive — 96% — did not transmit the virus.

A test that can accurately determine whether an individual with a positive PCR test result for COVID-19 is infectious was available as early as May 2020 — but public health authorities appear to have ignored it.

The test developed by Stanford researchers, however, was able to detect whether the person is capable of infecting others.

“Though the test was developed for use in hospitals, its utility outside of a medical setting is obvious. Regular people could have paid for the test to find out after they got over a bout of COVID whether they were still infectious or not, enabling them to go to work, visit relatives, and so on. Millions of kids could have tested out of isolation.”

https://childrenshealthdefense.org/defender/test-asymptomatic-covid-positive-person-infectious-cdc-fauci/