A 10-month-old child of a family visiting Delhi was noted by his mother to have a grand mal seizure

A 10-month-old child of a family visiting Delhi was noted by his mother to have a grand mal seizure with shaking of arms and legs by the description given to the EM resident. The resident found the child limp and unresponsive. In the emergency room the child’s fever was 39.5°C (103.1°F). Blood cultures and lumbar puncture were performed. CSF findings were as follows:

  • cell count of 9000/cumm
  • 95% PMNs
  • glucose 20mg/dl
  • protein 125mg/dl.

Gram stain showed PMNs and occasional Gram-negative coccobacillary organisms. The organism grew on chocolate agar but not on sheep blood agar or MacConkey’s agar. What is the most likely organism in this case?

  1. Haemophilus influenzae
  2. Neisseria meningiditis
  3. Moraxella catarrhalis
  4. Streptococcus pneumoniae