Meningitis: causes

0 - 3 months

• Group B Streptococcus (most common cause in neonates)
• E. coli
• Listeria monocytogenes

3 months - 6 years

• Neisseria meningitidis
• Streptococcus pneumoniae
• Haemophilus influenzae

6 years - 60 years

• Neisseria meningitidis
• Streptococcus pneumoniae

> 60 years

• Streptococcus pneumoniae
• Neisseria meningitidis
• Listeria monocytogenes

Immunosuppressed

• Listeria monocytogenes