Mode of presentation ● Subacute onset: Precede by several days of upper respiratory tract or gastrointestinal symptoms; difficult to pinpoint the exact onset of meningitis; usually with meningitis due to Haemophilus influenzae (H influenzae)and streptoccus pneumococcus (S pneumococcus)• Subacute onset: Precede by several days of upper respiratory tract or gastrointestinal symptoms; difficult to pinpoint the exact onset of meningitis; usually with meningitis due to Haemophilus influenzae (H influenzae) and streptoccus pneumococcus (S pneumococcus). Mode of presentation