3. • What is it?
• What causes it?
• What happens in the system?
• How to recognize it?
• How to prove it?
• How to treat it?
• How to prevent?
4. Significance
• Significant morbidity & mortality in
children [1.2m cases worldwide]
• Diagnosis, challenging in young children
• High incidence of sequalae
9. Reasons for infection
• Less immunity
• Contact with people with invasive disease
• Occult bacteremia [infants]
• Immunodeficiency
• Splenic dysfunction
• CSF leak , Meningomyelocele
• CSF shunt infection
10. Risk of infection
• Pneumococci
OM, sinusitis, pneumonia, CSF rhinorrhea.
• Meningococci
contact with adults, nasopharyngeal carriage
• HIB
Contact in daycare center
38. Prognosis
• Mortality >10% [more in pneumococci]
• Prognosis poor in
– Infants
– Fits >4days
– Coma, FND on presentation
• Neurological sequalae 20%
– Behavior changes 50%
– Deafness [pneumo,HIB], visual loss
– MR,fits,
39. Prevention
• Meningococci
– Rifampacin for close contacts [10mg/kg/day q12h for
2days]
– Quadrivalent vaccine for high risk children
• HIB
– Rifampacin for contacts for 4days
– Conjugate vaccine
• Pneumococci
– Heptavalent conjugate vaccine
40. TBM
• Subacute / ?chronic meningitis
• From lymphohematogenous dissemination
• Caseous lesion in cortex / meninges
• Discharge of TB bacilli in CSF
• Thick exudate infiltrate blood vessels
• Inflammation,obstruction,infarct.
56. Diagnosis
• CSF: lymphocytic predominance
– Protein: normal,high in HSV
– Glucose: normal,low in mumps
– Culture of organism [entero V]
– Viral antigen by PCR
– Culture from NPswab,feces,urine
• EEG: focal seizures [temporal];HSV
• CT/MRI: swollen brain parenchyma
57. EEG patterns include focal slowing, spiking, and paroxysmal
lateralizing epileptiform discharges.13 Focal-temporal or
lateralized polymorphic delta activity is the earliest change.
Diffuse slowing soon follows, with a persistence of temporal
predominance. Pseudoperiodic complexes, present on serial
EEGs in two-thirds of biopsy-proven cases, appear over
temporal regions
58. MRI brain (T2W image): right
temporal lobe high signal in a patient
with herpes encephalitis