Zoonoses disease- colibacillosis, Biology

Assignment Help:

Colibacillosis
Colibacillosis is caused by different strains of Escherichia coli. The disease mainly affects children and travelers. Organisms grow in gut and produce toxin. It may also invade superficial epithelium.


Epidemiology: On the basis of virulence and disease manifestations, 6 distinct groups of E. coli have been described. They are enterotoxigenic (ETEC), enteroinvasive (EIEC), enterohaemorrhagic (EHEC), enteropathogenic (EPEC), enteroaggregative (EaggEC) and diffusely adhering (DAEC) E. coli. Among EHEC, serotype 0157:H7 has emerged as a major pathogen. EPEC is an important cause of infantile diarrhoea and ETEC is the most common cause of traveler’s diarrhoea. EIEC produces an invasive dysentery type of diarrhoeal illness in humans with similar pathogenesis to Shigella.


Clinical features:
Incubation period is 24-72 hours. Toxin causes hyper secretion of chloride and water in small intestine. Sudden onset of diarrhoea and/ or vomiting occurs. It is a serious infection in newborn and an important cause of traveler’s diarrhea in adults. The disease is self-limiting and takes 1-3 days for recovery.


Diagnosis:
Diagnosis can be done based on isolation and identification of the b a c t e r i a  a nd  se r o l o gi c a l  te s t  l ik e  in d ir e c t  ha e ma g gl u ti n a t i o n .  M U G  (4 - methyleumbelliferyl-â-D-glucuronide) sorbitol agar is used for selective isolation of E. coli 0157:H7.Detection of virulence genes of pathogenic E. coli by PCR is a rapid and reliable technique. PCR based detection techniques have made it possible to detect genes encoding enterotoxins, cytotoxins and adhesion factors in E. coli strains.


Control and prevention:
Prevention can be done by providing public health education for adopting necessary hygiene and environmental sanitary practices. Thorough cooking of food and safe drinking water are essential to check such food- borne infections.


Related Discussions:- Zoonoses disease- colibacillosis

Segmentation - metazoa, Segmentation - Metazoa Segmentation or metamer...

Segmentation - Metazoa Segmentation or metamerism is the division of the body into smaller transverse compartments along the anterior-posterior axis. Segmentation is widesprea

Anomalies related to oesophagus and stomach, Anomalies Related to Oesophagu...

Anomalies Related to Oesophagus and Stomach   Let us discuss briefly the anomalies of oesophagus and stomach. These are summarised as  follows: Associated Problems  1)  P

Adrenal gland, ADRENAL OR SUPRARENAL GLANDS (GLANDS OF EMERGENCY) - ...

ADRENAL OR SUPRARENAL GLANDS (GLANDS OF EMERGENCY) - These are paired structures located on the top of the kidneys. Each adrenal gland has two parts external adrenal cort

Ideal eia and measures and benefits of eia, An ideal EIA system would: ...

An ideal EIA system would: (i)     Apply to all projects that are expected to have significant environmental effects and address all impacts that are expected to occur due to t

Mode of nurition, What mode of nutrition did lizard exihbite

What mode of nutrition did lizard exihbite

Explain the basal metabolic rate, Explain the Basal Metabolic Rate? The...

Explain the Basal Metabolic Rate? The Basal Metabolic Rate (BMR) gradually decreases after the attainment of maturity due to a decrease in muscle mass tissues and physical acti

Demonstrate the cell membrane, While working in the lab, you isolate a cell...

While working in the lab, you isolate a cell from a mouse and a cell from a human and fuse them together to form a live, hybrid cell. You then use an antibody that recognizes all m

Describe about development of sexual maturity in children, Briefly Describe...

Briefly Describe about Development of Sexual Maturity in Children? Sexual maturity develops along with growth spurt in adolescence. In girls, growth stops on attaining menarche

Colluvial-transported soil, Colluvial These are the soils formed from t...

Colluvial These are the soils formed from the material transported by the pull of gravity. Fragments from cliffs or steep rocky slopes become dislodged from time to time and ma

PHYUM, HOW MANY PHYLUM OF ANIMALS?

HOW MANY PHYLUM OF ANIMALS?

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