They can exist either extracellularly where the virus is inactive and isn't capable of reproducing or intracellularly where the capsid is removed and the virus becomes active.
They even put people in an MRI scanner and found that the brain is lighting up in a way that makes you more suspicious of people and less able to understand their intentions.
But then, the sounds of seagulls and ocean waves became more vibrant; so much so that his fears and worries slid off his shoulders and disappeared, and the pus in his lungs started to dissipate.