text: <unk> s are those<unk> s of the<unk><unk><unk>  (CNS).
  There are four main causes of<unk> s of the<unk><unk> : bacterial, viral, fungal and protozoal.
  Bacterial<unk> s can be pyogenic<unk> s (e.g., meningitis; brain abscess; subdural and epidural abscesses), tuberculosis, neurosyphilis, or leprosy.
  Viral<unk> s may be meningitis, encephalitis, poliomyelitis, slow virus<unk> s, acquired immune deficiency syndrome (AIDS), and post-infectious syndromes.
  Fungal<unk> s may be meningitis or meningoencephalitis, brain abscess, or spinal epidural<unk> .
  Protozoal<unk> s include toxoplasmosis, malaria or amoebic<unk> .
option_0: Central nervous system infection
option_1: Acquired brain injury
option_2: Basal ganglia disease
option_3: Brain tumor
option_4: Idiopathic inflammatory demyelinating diseases
option_5: Neoplastic meningitis
option_6: Central nervous system disease
option_7: Viral meningitis