IMHO, this is a vicious maneuver to discredit Trump's endorsement of HCQ as a valid CV-19 remedy and scare non-mask wearers into putting on their face coverings. There have been numerous reports that have exposed the inaccuracy of CV-19 test results, such as the following sample.
-NW

Bose Ravenel, M.D., F.A.A.P., Retired
Children’s Health Defense | Sep 14, 2020
https://tinyurl.com/y4qgdxa3

PCR is a complex chemical process that amplifies and converts a tiny piece of genetic code from RNA into DNA so it can be analyzed. Kary Mullis, inventor of the test, warned against using this technique for diagnosis due to the relatively high rate of false positive results if performed on asymptomatic individuals, as well as false negative results.

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CDC 2019-Novel Coronavirus (2019-nCoV) Real-Time RT-PCR Diagnostic Panel
CDC-006-00019, Revision: 05 | https://www.fda.gov/media/134922/download

Detection of viral RNA may not indicate the presence of infectious virus or that 2019-nCoV is the causative agent for clinical symptoms.

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Coronavirus disease (COVID-19) technical guidance: Laboratory testing for 2019-nCoV in humans
World Health Organization
https://tinyurl.com/yxftsdsn

Some assays may detect only the novel virus [COVID] and some may also detect other strains (e.g. SARS-CoV) that are genetically similar.

A Review of the Response to COVID-19
Dr. Pamela Popper | Jul 3, 2020
https://tinyurl.com/y4vtne2y
July 3, 2020

There are several issues concerning “new cases.” The first is that tens of millions of people are now being tested, and most are asymptomatic. Regardless of health status at the time of the test, all positives are being reported as “cases.” In other words, people who are healthy and have no symptoms are now “cases.”

Second, the tests are incredibly inaccurate. The tests are produced by several vendors, and each has established its own and as-yet-unmeasured accuracy.

How do the tests for Coronavirus work? They don't! And here's why!
David Icke | Aug 24, 2020
https://tinyurl.com/yxne7waz