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

Muromonab cd-3 , Muromonab CD-3 (Orthoclone, OKT-3) A monoclonal anti...

Muromonab CD-3 (Orthoclone, OKT-3) A monoclonal antibody against mature T lymphocytes, OKT-3 is primarily used to treat acute rejection episode. IV for 10-14 days. Effe

How are membranes classified, Concerning their permeability how are membran...

Concerning their permeability how are membranes classified? Membranes can be divided as impermeable, permeable, semipermeable or selectively permeable. An impermeable membra

What is a plant-incorporated protectant, What is a plant-incorporated prote...

What is a plant-incorporated protectant? Plant-incorporated protectants are pesticidal substances formed and used by the living plant, typically to protect the plant from pests

What''s the diffrence between regeneration and repair, What's the diffrenen...

What's the diffrenent between regeneration and repair ?  Regeneration: replacement of the destructed tissue by the same type of tissue  Repair : replacement of the destru

Mechanism of regeneration, MECHANISM OF REGENERATION - T.H. morgan reco...

MECHANISM OF REGENERATION - T.H. morgan recognised 2 primary mechanisms - M o r ph o l axis Epim orphosis 1. Production of enti

Explain antimicrobial susceptibility - tuberculosis, Explain antimicrobial ...

Explain antimicrobial susceptibility All isolates of M. tuberculosis  should be tested for antimicrobial susceptibility. Initial therapy for most patients with active TB should

Illustrate theory of goldman in corneal transparency, Illustrate the theory...

Illustrate the theory of Goldman according to corneal transparency. Goldman's Theory: The fibrils are small in relation to light and do not interfere with light transmissi

Explain tricuspid regurgitation, Q. Explain Tricuspid regurgitation? Th...

Q. Explain Tricuspid regurgitation? Though tricuspid regurgitation is a common valvular abnormality on echocardiography rarely is it due to primary organic disease. Secondar

Signify the term - proglottids, Signify the term - Proglottids? Seriall...

Signify the term - Proglottids? Serially repeating segment like structures found in tapeworms which contain reproductive organs. Immature proglottids are continually added at t

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