Listeriosis, Biology

Assignment Help:

Listeriosis

The disease is caused by Listeria monocytogenes - Gram positive small non spore- forming bacilli seen in soil, silage, sewage and feces of animals and birds. These bacteria can survive outside the host for several years but are susceptible to pasteurization and certain antimicrobials. The clinical symptoms are not specific. There is depression, ataxia and torticollis. The gross lesions observed are focal hepatic necrosis, spleenomegaly with military necrosis, nephritis, enteritis, myocarditis and conjunctivitis. In acute cases the only lesion seen are congestion of the viscera and petechial haemorrhages on several organs.

Definite diagnosis is based on isolation and identification of the bacteria from blood, liver, spleen or brain. Isolation may require pre-incubation of the macerated materials at 4oC for several days or weeks. Isolation of the organism can also be attempted in chicken embryos.  Potential source of infection should be avoided with biosecurity measures.


Related Discussions:- Listeriosis

Define the effect of niacin deficiency on digestive sysytem, Define the Eff...

Define the Effect of niacin deficiency on Digestive Sysytem? The predominant symptoms are glossitis and diarrhoea. Glossitis, cheilosis and stomatitis may vary from mild rednes

What are zymogens, What are zymogens? Zymogens, or proenzymes, are enzy...

What are zymogens? Zymogens, or proenzymes, are enzymes secreted in inactive form. Under some conditions a zymogen shifts to the active form of the enzyme. Zymogen secretions i

Aortic valve repair-types of surgery in ar, Aortic Valve Repair :  ...

Aortic Valve Repair :  In, acquired AR associated with VSD and prolapse of a cusp, repair is often successful. VSD is closed and at the same time the prolapsed part of

State in detail about the thylakoid membrane, State in detail about the thy...

State in detail about the thylakoid membrane The thylakoid membrane contains all the factors associated with the photosynthetic electron transport leading to the generation of

Explain the terms - sulphur and boron, Sulphur and Boron Boron is extra...

Sulphur and Boron Boron is extracted with hot water. Sulphur is extracted with 500 ppm solution of P solution (prepared from potassium dihydrogen orthophosphate or monocalcium

Define the prevention of adverse food reactions, Define the Prevention of A...

Define the Prevention of Adverse Food Reactions? Considering the increasing incidence, cost and morbidity associated with allergic reactions, it is perhaps useful to design pre

Define nutritional needs during exercise, Define Nutritional Needs during E...

Define Nutritional Needs during Exercise? During Exercise: Addressing the nutritional needs during training is essential for optimal performance. The focus should be to:

Understanding behaviour of diabetic patients, Q. Understanding Behaviour of...

Q. Understanding Behaviour of diabetic patients? Beliefs  Each of us has a set of beliefs that were learned by us when we were young. These include religious beliefs and

Additional substances does a plant need to make amino acid, a) What additio...

a) What additional substances does a plant need to make amino acids and proteins from glucose? b) Where do these substances come from?   (a) To make amino acids

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd