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Salmonella, Bacterium, Enterobacteriaceae, Gram-negative, Poultry...

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<td>Bacteria <tr><td>Phylum:<td>Proteobacteria <tr><td>Class:<td>Gamma Proteobacteria <tr><td>Order:<td>Enterobacteriales <tr><td>Family:<td>Enterobacteriaceae <tr><td>Genus:<td>Salmonella </table> <tr><th bgcolor=lightgrey>Species <tr><td> Salmonella bongori
Salmonella choleraesuis
Salmonella enterica
Salmonella enteritidis
Salmonella nyanza
Salmonella paratyphi
Salmonella typhi
Salmonella typhimurium
Salmonella virginia </table> Salmonella is a genus of rod-shaped Gram-negative enterobacteria that causes typhoid fever, paratyphoid and foodborne illness. Disease-causing salmonellae have recently been re-classified into a single species, Salmonella enterica, which has numerous strains or serovars. Salmonella typhi is a well known serovar that causes typhoid fever. Other salmonellae are frequent causes of foodborne illness, and can especially be caught from poultry. In the mid to late 20th century, Salmonella enterica serovar Enteritidis was a common contaminant of eggs. This is much less common now with the advent of hygiene measures in egg production and the vaccination of laying hens to prevent samonella colonisation. Many different salmonella serovars also cause severe diseases in animals other than human beings.

Symptoms

Symptoms are usually gastrointestinal and can include nausea, vomiting, diarrhoea. These symptoms can be severe especially in the old and very young. Symptoms last generally up to a week, and can appear around 24 hours after ingestion of the bacterium.

The bacterium induces responses in the animal that it is infecting and this is probably what causes the symptoms rather than any direct toxin.

External links

notes on Salmonella nomenclature (http://www.bacterio.cict.fr/salmonellanom.html)
Taxonomy Browser (http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi) at the U.S. National Center for Biotechnology Information (http://www.ncbi.nlm.nih.gov/)
List of Salmonella species at Finland's National Public Health Institute (http://www.ktl.fi/ttr/gen/mikrobiryhmat/1200.html) (in Finnish)

de:Salmonellen fr:salmonelle nl:Salmonellae sv:Salmonella

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<tr><th bgcolor=lightgrey>Scientific classification <tr><td>

Salmonella

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Salmonella

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This page was last modified 01:47, 24 Sep 2004.

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