Detailed Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Problem:Passage: Bacteria and viruses can infect the brain or spinal cord. An infection of the brain is called encephalitis. An infection of the membranes that cover the brain and spinal cord is called meningitis. A vaccine is available to prevent meningitis caused by viruses (see Figure below ). Answer: encephalitis
Solution:
An infection of the brain is called?