Z-pack is an antibiotic so strictly for bacterial infections, Flu is viral as is Covid-19, and "the common cold"
But bacterial infections can show up when your system gets weak because you had a viral infection, i.e. a cold can become pneumonia
Viral infections don't last as long as bacterial in most cases
A cold is viral, so 3 to 5 days
Pneumonia is bacterial, 2 to 3 weeks
So if you get sick and it just "hangs on" then its most likely now a bacterial infection, virus infection is over
So the Z-pack can now work
There are no anti-viral drugs that work very well, just vaccines made from weakened or empty virus shells, these shells are eventually detected by your immune system cells, and they bind to them, and "remember the different shapes", sometimes for years and years and sometimes just for 1 or 2 years, each person and virus is different
Getting a vaccination AFTER you are already infected doesn't help, because the "shapes" your immune system needs to bind with are already there, and not recognized as "bad"
People who are getting over Covid-19 with milder symptoms have an immune system that recognized it as "bad" faster so started binding with its "offspring" faster, ridding the body of it
This could be because they were exposed to a similar virus in the past, not exactly the same "shape" but maybe a partial "shape" just enough to interfere with its replication in you body, so mild symptoms
Vaccine works if you are infected by an active virus with "the same shape" THEN your immune system can react quickly to bind to it so the Virus can't bind to body's cells and reproduce/replicate
Viruses evolve and change their "shape" this is what Covid-19 is, and a Covid-19 vaccine will come around
You often need a "flu shot" every year, because of slight changes in "shapes" and to nudge your immune system's memory, lol, but this is also to protect others, so you don't spread the Flu virus
The "common cold" virus has eluded any vaccines, but every year a "new cure" is tried
Hydroxychloroquine is not a preventative drug nor is Z-Pack
Hydroxychloroquine is used to SUPPRESS your immune system, it is used once someone has an infection and their immune system is OVER REACTING to the infection
Z-pack is used if a person gets a bacterial infection because a virus has weakened their system, and/or because they were given hydroxychloroquine which is suppose to weaken the immune system
Neither has any effect on this virus or any other virus directly