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Bacillus Species Pseudomeningitis

  • Ludwig A. Lettau (a1), Dean Benjamin (a2), H. Furman Cantrell (a2), David W. Potts (a1) and J. Michael Boggs (a1)...


A cluster of cerebrospinal fluid Gram's stains showing gram-positive bacilli and of cerebrospinal fluid cultures growing Bacillus species in a large community teaching hospital prompted an epidemiologic and microbiologic investigation. Pseudomeningitis was suspected and confirmed when cultures of uninoculated commercial trypticase soy broth with 5% Fildes enrichment grew Bacillus species. Secondary contamination of the pipettes used for inoculation accounted for the positive cerebrospinal fluid Gram's stains. The costs of this pseudo-outbreak included unnecessary antibiotic therapy, lumbar punctures, and hospitalization. Such adverse effects can be minimized by increased physician awareness of pseudoinfections and by prompt investigation of such occurrences.


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Greenville Memorial Medical Center, 701 Grove Road, Greenville, South Carolina 29605


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Bacillus Species Pseudomeningitis

  • Ludwig A. Lettau (a1), Dean Benjamin (a2), H. Furman Cantrell (a2), David W. Potts (a1) and J. Michael Boggs (a1)...


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