<prompt> A mother brings her 1-month-old infant to the pediatrician. She says the baby is crying more than usual and is vomiting and does not want to eat. Meningitis is suspected, and a lumbar puncture is done, which shows the following results; Opening pressure 240 mm H2O normal 100-200 mm H2O, WBC count: 1200mm3, Protein: 200 mgdL, Glucose: 30 mgdL, Gram stain: gram-positive rods, W hich of the following organisms is most likely responsible for this infants meningitis?Escherichia coliListeria monocytogenesNeisseria meningitidesStreptococcus agalactiae  <response>: B Listeria monocytogenes Listeria septicemia: infants between the ages of 0 and 3 months, most common organisms causing meningitis are Listeria monocytogenes Escherichia coli Group B streptococcus Listeria monocytogenes: only gram-positive rod in the group. 