Diagnosed when: 1) a patient presented with clinical features of meningitis and either 2) four or more of the following were present i) a history of TB ii) a predominance of CSF lymphocytes (.50%), iii) illness duration of more than five days iv) CSF glucose ,2.2 mmol/L, v) altered consciousness, vi) clear or yellow CSF with protein.1 g/L, vii) focal neurological signs, or 3) ‘markedly abnormal’ CSF (excluding isolated hypoglycemia) with evidence of TB elsewhere.