-Lactamase-Negative and
-Lactamase-Positive Haemophilus influenzae Type b from Cerebrospinal Fluid of a Neonate
1 Division of Pediatrics, Department of Medicine, Lutheran General Hospital, Park Ridge, Illinois
A case of Haemophilus influenzae type b meningitis in a neonate from whom both a
-lactamase-negative and a
-lactamase-positive strain were isolated simultaneously is reported. Both bacteriology laboratory technicians and clinicians should be aware of this phenomenon when performing sensitivity tests on H influenzae isolates or treating patients with serious H influenzae infection.