system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If we could get every single person on the planet to quarantine themselves in their houses for a period of 10 - 14 days (or however long it would take), could we eliminate most/every virus or bacteria?

I'm talking about communicable illnesses that spread through air, bodily fluids, and infected surfaces (not STDs, autoimmune, cancer, etc). So if we gave every sick person a chance to recover and not infect anyone around them, would the microorganisms behind the diseases just die and be eradicated forever? 

I obviously realize this is implausible, just had a thought and am wondering the science behind it.
gpt
Randal Munroe (author of XKCD) answered this in his book "What-If" (great read by the way). Even if you gave everyone an airtight suit for several months, you would always have someone with a compromised immune system harboring the infection without actually being sick, ready to re-infect the general population after the quarantine period expires.