Salmonella diseases


Salmonella infections can have a broad range of illness, from no symptoms to severe illness. The most common clinical presentation is acute gastroenteritis. Symptoms include diarrhea and abdominal cramps, often accompanied by fever of 100°F to 102°F (38°C to 39°C). [4, 5] Other symptoms may include bloody diarrhea, vomiting, headache and body aches.

S. Typhi and Paratyphi generally cause a bacteremic illness— Salmonella found in the blood—of long duration. This illness is called enteric, typhoid, or paratyphoid fever. [5] Symptoms start gradually, and include fever, headache, malaise, lethargy, and abdominal pain. In children, it can present as a non-specific fever. The incubation period for S. Typhi is usually 8 to 14 days, but it can range from 3 to 60 days. [5, 6] For S. Paratyphi infections, the incubation period is similar to that of non-typhoidal Salmonella , 1 to 10 days. [5,6]

Mechanically separated chicken made by Tyson was linked to a Salmonella outbreak in late 2013 and early 2014.… Continued

The Chicken Vet is commonly asked about egg laying problems and chickens laying soft shelled eggs. Sometimes these queries are nothing to worry about as your chickens are just going through a normal process of coming into or going out of lay. However, there are occasionally difficulties and these birds may be experiencing an internal or blind layer problem. These terms are used to describe birds whose oviducts (egg tubes) are not functioning as they should be.

Usually the oviducts carry the yolk from the ovary to the vent over a 24 hour period. During this time the white, membranes and shell are formed around the yolk. In chickens with damage to their oviducts the egg does not form properly and the yolk is laid internally into the belly/abdomen. These yolks can be absorbed over time but in most cases the chicken lays them internally faster than they can be absorbed resulting in a build up within the abdomen. This enlarges the abdomen and causes the chicken to experience discomfort and difficulty breathing. In order to help relieve the pressure on the abdomen the chickens adopt an upright penguin-like stance.

Some factors such as coming into lay and stress can cause the odd internally laid egg.  However, severe oviduct damage, can lead to permanent oviduct problems and therfore they remain internal layers for life.

At the beginning of the 19th century, typhoid was defined on the basis of clinical signs and symptoms and pathological (anatomical) changes. However, at this time, all sorts of enteric fevers were characterized as "typhoid".

In 1880s, the typhoid bacillus was first observed by Eberth in spleen sections and mesenteric lymph nodes from a patient who died from typhoid. Robert Koch confirmed a related finding by Gaffky and succeeded in cultivating the bacterium in 1881. But due to the lack of differential characters, separation of the typhoid bacillus from other enteric bacteria was uncertain.

In 1896, it was demonstrated that the serum from an animal immunized with the typhoid bacillus agglutinated (clumped) the typhoid bacterial cells, and it was shown that the serum of patients afflicted with typhoid likewise agglutinated the typhoid bacillus. Serodiagnosis of typhoid was thus made possible by 1896.

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Salmonella infections can have a broad range of illness, from no symptoms to severe illness. The most common clinical presentation is acute gastroenteritis. Symptoms include diarrhea and abdominal cramps, often accompanied by fever of 100°F to 102°F (38°C to 39°C). [4, 5] Other symptoms may include bloody diarrhea, vomiting, headache and body aches.

S. Typhi and Paratyphi generally cause a bacteremic illness— Salmonella found in the blood—of long duration. This illness is called enteric, typhoid, or paratyphoid fever. [5] Symptoms start gradually, and include fever, headache, malaise, lethargy, and abdominal pain. In children, it can present as a non-specific fever. The incubation period for S. Typhi is usually 8 to 14 days, but it can range from 3 to 60 days. [5, 6] For S. Paratyphi infections, the incubation period is similar to that of non-typhoidal Salmonella , 1 to 10 days. [5,6]

Mechanically separated chicken made by Tyson was linked to a Salmonella outbreak in late 2013 and early 2014.… Continued

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Salmonella diseases
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