Clinical Microbiology

 

CHROMagar™ Salmonella


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Packaging / Colonies appearance
  





For detection and isolation of Salmonella spp.,
including
S.Typhi and S.Paratyphi
in clinical specimens.


Typical Appearance of microrganisms

Salmonella → mauve
Other bacteria → blue, colourless, or inhibited.

Order References 

Please use these references when
contacting your local distributor:

1000ml...........SA130
5000ml...........SA132
25L................SA133-25
Bulk…………...….on request
To download the certificate of analysis, please indicate your lot number below :
 

 
 

Medium Performance


  1. Easy reading: intense mauve colony colours for better identification.
  2. Greater Specificity / Less workload: conventional media for the detection of Salmonella by H2S character have very poor specificity resulting in numerous false positives (Citrobacter, Proteus, etc.) among the rare, real positive Salmonella. The workload for unnecessary examination of suspect colonies is so heavy that real positive Salmonella colonies might often be overlooked in routine testing. Because of their poor specificity, conventional media require a tedious examination of at least 10 colonies per suspected sample.
    On the contrary, CHROMagar Salmonella eliminates most of those false positives and allows technicians to focus on the real contaminated samples.
  3. High sensitivity, leading to a higher detection rate of Salmonella:
    Salmonella sensitivity: 100%*
    Specificity: 89%* compared to 78% with Hektoen Agar.
     *Specificity and sensitivity from scientific study: “Comparison of CHROMagar Salmonella medium and Hektoen Enteric Agar for isolation of Salmonellae from stool samples.” Gaillot O. et al. 1999. Journal of Clinical Microbiology, 37 : 762-765
  4. Dramatic decrease of the workload:
    Number of useless confirmatory tests is minimized since there is no need of duplicating them.


  5. Medium Description






Gain flexibility using powder rather than ready to use plates:Use the entire pack, or if there is a need for a smaller number of plates, just a portion. If kept under appropriate storage temperature, CHROMagar Salmonella has a 2 years shelf life. This flexibility is essential to avoid the waste resulting from expired-unused plates. 

-Referenced in the Chinese standard for microbiological examination of food hygiene GB/T 4789.4-2008.



Please refer to our IFU and Material Safety data sheet for complete information about the medium.
CHROMagar™, Rambach™, AquaCHROM™ are trademarks created by Dr. A. Rambach.
Last Update: 26-Oct-2017

Focus on Salmonella Species


Infections caused by Salmonella spp, including Salmonella Typhi, remain a major worldwide health problem:
- In the US, Salmonella has an incidence rate of 16.2 cases per 100,000 (CDC estimation, 2008).
- In Europe, it is reported as the first cause of collective toxi-infections. (2007 EFSA report)
- In developing countries, Salmonella Typhi and Paratyphi are commonly encountered with an estimated annual incidence of about 17 million cases. (2007 EFSA report)

Moreover, according to a recent WHO report, Salmonella infections are responsible for 2 million deaths per year from diarrhoea.


Salmonella Epidemiologic Issues


Mainly due to contamination in the food chain and/or during food-production processes, Salmonella commonly induces enteric illness whose major symptoms are abdominal cramps, diarrhea, nausea, vomiting.
More severe cases, for instance typhoid cases or infections in immuno-depressed patients, can lead to body dehydration with renal failure or bacteraemia.
 

Comparison of four chromogenic media and Hektoen Agar for detection and presumptive identification of Salmonella strains in human stools.

2003

Perez J.M., Freydière A.M. et al. 2003. Journal of Clinical Microbiology, 41 : 1130-1134.
PUBLICATION

Comparison of CHROMagar Salmonella medium and Xylose-Lysine-Desoxycholate and Salmonella-Shigella Agars for isolation of Salmonellae from stool samples.

2002

Maddocks S. et al. 2002. Journal of Clinical Microbiology, 40 : 2999-3003.
PUBLICATION

Comparison of CHROMagar Salmonella medium and Hektoen Enteric Agar for isolation of Salmonellae from stool samples.

1999

Gaillot O. et al. 1999. Journal of Clinical Microbiology, 37 : 762-765.
PUBLICATION
 
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