First off, let us get this part out of the way: CDC SAYS IT DOESN'T EXIST.
More on no coronavirus proven to exist via CDC:
Where is the coronavirus? The CDC says it isn’t available.
The CDC document is titled,
“CDC 2019-Novel Coronavirus (2019-nCoV) Real-Time RT-PCR Diagnostic Panel.”
It was originally published in February, 2020, and re-published in July.
Buried deep in the document, on page 39, in a section titled, “Performance Characteristics,” we have this: “Since no quantified virus isolates of the 2019-nCoV [SARS-CoV-2] are currently available, assays [diagnostic tests] designed for detection of the 2019-nCoV RNA were tested with characterized stocks of in vitro transcribed full length RNA…”
The key phrase there is: “Since no quantified virus isolates of the 2019-nCoV [virus] are currently available…”
1. No virus confirmed
2. PCR tests do not test for live infectious viruses existing in host
3. Therefore, there is absolutely no way to test for said virus
4. What does this tell you? (...that and to share TF out of this)
The use of masks and respirators to prevent transmission of inﬂuenza: a systematic review of the scientiﬁc evidence
Accepted 10 October 2011. Published Online 21 December 2011. DOI:10.1111/j.1750-2659.2011.00307.x
Effectiveness of N95 respirators versus surgical masks in protecting health care workers from acute respiratory infection: a systematic review and meta-analysis
CMAJ May 17, 2016 188 (8) 567-574; DOI: https://doi.org/10.1503/cmaj.150835