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Volume 16, Number 3—March 2010
Dispatch

Paenibacillus larvae Bacteremia in Injection Drug Users

Siegbert RiegComments to Author , Tilman Martin Bauer, Gabriele Peyerl-Hoffmann, Jürgen Held, Wolfgang Ritter, Dirk Wagner, Winfried Vinzenz Kern, and Annerose Serr
Author affiliations: University Hospital, Freiburg, Germany (S. Rieg, T.M. Bauer, G. Peyerl-Hoffman, J. Held, D. Wagner, W.V. Kern, A. Serr); Reference Laboratory of the World Organisation for Animal Health, Freiburg (W. Ritter)

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Figure

Paenibacillus larvae gram-positive, spore-forming, rod-shaped bacteria (A) (Gram stain, original magnification ×1,000) with the ability to form giant whips upon sporulation (B) (nigrosine stain, original magnification ×1,000). In American foulbrood (AFB), newly hatched honey bee larvae become infected through ingestion of brood honey containing P. larvae spores. After germination and multiplication, infected bee larvae die within a few days and are decomposed to a ropy mass, which releases milli

Figure. Paenibacillus larvae gram-positive, spore-forming, rod-shaped bacteria (A) (Gram stain, original magnification ×1,000) with the ability to form giant whips upon sporulation (B) (nigrosine stain, original magnification ×1,000). In American foulbrood (AFB), newly hatched honey bee larvae become infected through ingestion of brood honey containing P. larvae spores. After germination and multiplication, infected bee larvae die within a few days and are decomposed to a ropy mass, which releases millions of infective spores after desiccation. C) AFB-diseased larvae are beige or brown in color and have diminished segmentation (healthy and AFB-diseased larvae). D) Clinical diagnosis of AFB can be made by a matchstick test, demonstrating the viscous, glue-like larval remains adhering to the cell wall.

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Page created: December 14, 2010
Page updated: December 14, 2010
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