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Intracranial infections can be divided according to causative organisms or according to anatomical location or even by route of spread.
The organisms involved vary depending on the specific location of infection. Needless to say bacteria, viruses, fungi, nematodes and parasites can all cause intracranial infections.
By route of spread
- haematogenous (bacteraemia as a result of distant infection / colonisation)
- direct spread (acute sinusitis / acute otomastoiditis)
- direct introduction (iatrogenic or traumatic)
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