<prompt> Commonest cause of otogenic meningitis is:Streptococcus pneumoniaeH. influenzaPseudomonasE. coli  <response>: a Streptococcus pneumoniaeRef. Cummings, 6th ed., 2171MC cause of otogenic meningitis was H. influenzae but after the introduction of Hib vaccine in the universal immunisation programme, it is Streptococcus pneumoniae now. 