Characteristics
Shape and Size
2 žm in length and 0.5 žm in diameter. Cylindrical or Rod shaped.
Genome Information
enterica serovar Montevideo str. 507440-20 chromosome ( GI:605518)114 has a circular DNA chromosome of 4694375 bp. It has 4,376 genes and 4,250 coding proteins, Pseudo Genes: 13, rRNAs: 22 ( 5S, 16S, 23S ), tRNAs: 85, Frameshifted Genes: 10. The GC content of Salmonella Enteritidis is about 38% and the percentage coding of the bacteria is about 97.01%.
Food Source
Poultry meat, Pork, Beef,lamb and meat mixtures, Pastry, Dried milk products, Cream,Tofu,Unpasteurizemilk, Raw eggs, Poultry,Spices, Salads, Chocolate,Fish,Shellfish,Cooked custards ,Sauces such as protein), Fresh produce like melons, tomatoes, lettuce and sprouts, Cream-filled desserts and toppings.
Pathological Factor
S.Typhoid toxin is a unique virulence factor of Salmonella Typhi, which is expressed only during bacterial infection in mammalian cells. . After its synthesis and secretion from the bacteria, the toxin is transported by carrier intermediates from the Salmonella-containing vacuole to the extracellular space,from where it gains access to target cells via autocrine or paracrine routes cuase infection. Other most important virulence genes are those located within the so-called Salmonella pathogenicity islands (SPIs) and 5 SPIs have been reported to have a major contribution to pathogenesis.
Disease
salmonellosis:colitis/ enteric fever (typhoid)
Symptoms
Ingestion of contaminated foodsleads to Gastrointestinal infection which usually usually arises exclusively by human pathogens S. enterica serovar Typhi and S. enterica serovar Paratyphi A and B. Clinical manifestations include fever, headache, abdominal pain , and transient diarrhea or constipation, and infection can produce fatal respiratory problems.Salmonella Enterica infection causes:Gastroenteritis, Reactive Arthritis, Septicaemia, Aortitis, Cholecystitis, Colitis
Affected Body Organs
abdominal cramps, stomach pain, diarrhea, nausea, chills, fever, and headache. joint pain and bowel discomfor
|