All-cause meningitis in the elderly except -
Causes of meningitis in elderly 

Pneumococci (most common)
Gram negative bacilli
Staphylococcus aureus
Meningiococci (2nd most common)
Listeria monocytogenes
Streptococcus
H. influenza
M. tuberculosis
HSV2
Pneumococci
Gram negative bacteria
Listeria