PART 3:
Possible role(s) of Azithromycin:

This paper has an intriguing result:
[link to link.springer.com (secure)]
CD147 as a Target for COVID-19 Treatment: Suggested Effects of Azithromycin and Stem Cell Engagement
“All patients treated with hydroxychloroquine and azithromycin had negative PCR results in nasopharyngeal samples, i.e., 100% of patients treated with both drugs were virologically cured compared to 57.1% of subjects treated with hydroxychloroquine only, and 12.5% of untreated individuals. Hydroxychloroquine and chloroquine have direct antiviral activity, as demonstrated in vitro”

Remember loss of smell/taste is a key symptom? Olfactory cells get infected...
Note that human olfactory cells do not express ACE2 or TMPRSS2 (known receptors used by SARS-CoV-2), but olfactory cells DO express CD147/Basigin.
[link to en.wikipedia.org (secure)] (look at the Wikipedia Basigin/CD147 page for yourself! See Malaria and SARS-CoV-2 there!? hmm..

CD147/Basigin is also thought to be a key entry point for Malaria parasites to infect red blood cells..and HCQ works against Malaria, right??

Another Azithromycin revelation:
Bacteriophage-like activity observed.
Then treated with Azithromycin or other antibiotics.
[link to zenodo.org (secure)]
SARS-CoV-2 RNA load was reduced to negligible levels in the four aliquots treated with metronidazole, vancomycin, amoxicillin and azithromycin, respectively