Residual auditory defect is a common complication in meningitis caused by
Staphylococcus
Meningococcus
Escherichia coli
Haemophilus influenzae
Residual auditory defect is caused by Haemophilus meningitis .so BERA is the investigation of choice done in them. Reference: GHAI Essential pediatrics, 8th edition
Central Nervous system