Most common cause of Pyogenic Meningitis in 6 month to 2 years of age is

Bacterial meningitis is caused by several different types of bacteria, including: Streptococcus pneumoniae, also called pneumococcus. Neisseria meningitidis, also called meningococcus. Haemophilus influenzae, also called Hib. Listeria monocytogenes. group B strep E. coli. Reference: GHAI Essential pediatrics, 8th edition