system
Given the following post, respond as if you're commenting on Reddit:
human
After the human immune system is already activated, does it matter if new virus is continually being fed in?

If we pretend there are two people, each located in a seperate room, who are both infected with the COVID-19 virus.  Their immune systems have activated and their bodies are now fighting the infection.  

Now pretend that a vent is pumping further COVID virus particles into the air for just one of the rooms.

My question is, should we expect the severity or recovery timeline of the disease to be impacted for the person in the room getting a continuous feed of new/additional virus particles via the vent?  Why or why not?
gpt
Depends on how high this continuous amount of virus is. Generally, the exposure amount you see in daily life is very small compared to the viral load in the body after the infection takes hold. Continual exposure to such levels of virus wouldn’t change much - once the immune system is activated and doing a good enough job that it can clear the viral in your body, it can easily deal with typical low-level exposure. You wouldn’t even see a big increase in symptoms, if at all.

But if you’re pumping in huge swathes of virus, filling the air with more virus than ever before seen, then you can overwhelm the immune system and kill the person, or keep them constantly infected/reinfected. The amount required for this would be pretty much impossible to see in normal environments.