Visceral larva migrans, Biology

Assignment Help:


Visceral larva migrans


Visceral larva migrans, also known as larval granulomatosis, is a clinical syndrome produced by the extra-intestinal migration of larval nematodes and is characterized by chronic granulomatous lesions. The disease is prevalent throughout the world including  India. It is caused by larvae of mainly Toxocara canis or some times T. cati. The dogs and cats are the principal reservoir hosts. The man acquires the infection by ingestion of eggs through contaminated dust. The eggs are hatched in the intestine and larvae migrate to other organs. The condition is usually seen in children of 1-5 years of age as they have a habit of dirt eating and playing at the places where soil is heavily contaminated. The liver and lungs are mainly affected; however, some times brain and eyes also get involved. The related clinical signs include pneumonia, dyspnoea, fever, coughing, loss of appetite, vomiting, convulsion, chorioretinitis, persistent eosinophilia and hepatomegaly.


The demonstration of larvae in biopsies of affected organs confirms the diagnosis. The condition can be diagnosed by seeing the elevated tortuous character of the tunnels under the skin. Complement fixation, immunofluorescence, indirect haemagglutination and ELISA are used for serodiagnosis. The public health education for personal hygiene, prophylaxis in dogs and cats and avoidance of contact with infected dogs, cats and contaminated places are the important preventive measures.


Related Discussions:- Visceral larva migrans

Explain theory of gram staining of bacterial cultures, Explain Theory or Pr...

Explain Theory or Principle of Gram Staining of Bacterial Cultures? Foods are rich in various nutrients and can support the growth and survival of microorganisms. The microbial

What is the kind of digestion occurs in cnidarians, Q. What is the kind of ...

Q. What is the kind of digestion that occurs in cnidarians? These animals have a digestive cavity and they make intracellular and extracellular digestion. The extracellular dig

Characteristics of the age pyramids of developed countries, Q. What are the...

Q. What are the main characteristics of the age pyramids of developed countries? In the stabilized human population the age pyramid has a narrower base since the reproduction r

Explain about homo neanderthalensis, Homo neanderthalensis successfully liv...

Homo neanderthalensis successfully lived in the cold, harsh ice-age conditions of Europe until becoming extinct approximately 30 000 years ago. Adaptations which enabled them to s

Homework, why do ecological models commonly have limited applications?

why do ecological models commonly have limited applications?

Define investigative techniques in nutritional biochemistry, Define Investi...

Define Investigative Techniques in Nutritional Biochemistry? It is an important component of this manual as it focuses on providing an understanding of biochemical methods, tec

What is light reaction, What is light reaction? Light reactions are rea...

What is light reaction? Light reactions are reactions, which are initiated by light (also photo-induced reactions). Usually, light energy is change into chemical energy.

What is the carbon cycle, What is the carbon cycle? The carbon cycle sh...

What is the carbon cycle? The carbon cycle shows the circulation and recycling of the chemical element carbon in nature as a result of the action of living beings. Photosynt

Direct approach to counseling, Q. Direct Approach to counseling? The di...

Q. Direct Approach to counseling? The direct approach to counselling is also called as the problem-solving approach. The counsellor collects relevant information which aims to

Vascular lesions caused by leeches upon the blood vessels, Q. The vascular ...

Q. The vascular lesions caused by leeches upon the blood vessels of their host cause blood naturally to coagulate. How does the leech solve this problem since it could be expected

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