A variety of organisms are CAMP positive, meaning they produce a diffusible extracellular protein (CAMP factor) that enhances the lysis of red blood cells by Staphylococcus aureus beta-hemolysin.
Here's a breakdown of CAMP-positive organisms based on the provided reference:
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Streptococcus agalactiae (Group B Streptococcus): While not explicitly listed in the provided short answer, it's the classically known and most commonly tested-for CAMP-positive organism.
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Other Bacteria:
- Rhodococcus equi
- Pasteurella haemolytica
- Listeria monocytogenes
- Listeria seeligeri
- Aeromonas sp.
- Certain Vibrio spp.
- Group G streptococci
The CAMP test is a useful diagnostic tool to help identify these organisms based on their hemolytic reaction in the presence of Staphylococcus aureus beta-hemolysin. A positive CAMP test results in an enhanced zone of hemolysis in the shape of an arrowhead where the tested organism and S. aureus streaks meet on a blood agar plate.
