Context: Persistent infections occur because the body is unable to clear the organism after the initial infection. Persistent infections are characterized by the continual presence of the infectious organism, often as latent infection with occasional recurrent relapses of active infection. There are some viruses that can maintain a persistent infection by infecting different cells of the body. Some viruses once acquired never leave the body. A typical example is the herpes virus, which tends to hide in nerves and become reactivated when specific circumstances arise.

Question: Why do persistent infections occur?
Answer: body is unable to clear the organism after the initial infection

Question: What are persistent infections characterized by the continual presence of?
Answer: the infectious organism

Question: How can some viruses main a persistent infection?
Answer: by infecting different cells of the body

Question: What never leave the body when acquired?
Answer: Some viruses

Question: Where does the herpes virus hide?
Answer: in nerves

Question: Why do persistent infections never occur?
Answer: Unanswerable

Question: What are persistent infections characterized by the continual absence of?
Answer: Unanswerable

Question: How can some viruses cure a persistent infection?
Answer: Unanswerable

Question: What always leave the body when acquired?
Answer: Unanswerable

Question: Where does the herpes virus avoid?
Answer: Unanswerable