>>11494256>That nasal swab?Yes. They process the stuff on the swab and look for virus cells in it.
>Could it get into other parts of your body and manifest as a future pneumonia attack?No. Viruses don't have brains, they're not going to hide in your feet to evade a test and then sneak back up to your lungs. Anything that causes issues in your lungs will be in your lungs.
The reason HIV is incurable is because it leeches directly off the immune system, and since the immune system won't commit suicide you can't kill all the viral cells. Coronaviruses (including this one) do not do this.