Cat scratch disease, Biology

Assignment Help:

Cat scratch disease


It is caused by Bortenella henselae, a gram-negative, non-motile bacterium. The organism is found in all parts of the world. The cat is an important reservoir host. Infectious agent is found in saliva of infected cats and may be transmitted to man through abrasion, scratch, lick or bite. It occurs more often in the winter. This disease may be more common in children because they play with cats and bitten or scratched  more frequently. The infection usually remains asymptomatic in cats and they may carry the organisms for months, once get infected. The disease is not contagious from person to person.


A blister or a small bump develops several days after the scratch or bite, which is called inoculation lesion that is most commonly found on the arms and hands, head, or scalp. Subsequently, one or more lymph nodes close to the area of the inoculation lesion swell and become tender. Other symptoms include rash on the skin, fever, sore throat, fatigue, loss of appetite, headache and anorexia. There may be an eye infection known as parinaud oculoglandular syndrome with symptoms including a small sore on the conjunctiva, redness of the eye, and swollen lymph nodes in front of the ear. The diagnosis is made on the basis of case history, isolation of organisms, demonstration of antibodies by ELISA and delayed type hypersensitivity by Hanger – Rose intradermal test. Public awareness and avoidance of contact with infected cats, through washing and care of any scratch from cat may help to reduce the risk of disease.


Related Discussions:- Cat scratch disease

Carrier protein in a plasma membrane, What is a characteristic feature of a...

What is a characteristic feature of a carrier protein in a plasma membrane? Carrier proteins are globular proteins which are particular it their action and therefore regulate t

Chemical reactions which are catalysed by enzymes, Give two examples of che...

Give two examples of chemical reactions which are catalysed by enzymes in the course of brewing.  In the course of brewing, enzymes in the grain catalyse the conversion of star

Cell body and cell cycle, Cell body in a neuron, the part which contains t...

Cell body in a neuron, the part which contains the nucleus and most of the cytoplasm and organelles. Cell cycle It is the sequence of events from one division of the cell to

Group selection, The effect of natural selection on colonies or population ...

The effect of natural selection on colonies or population favouring one group in preference to other may be referred to as group selection. A group can be the smallest collection o

What factor contributed to the current variations, According to the theory ...

According to the theory of natural selection, what factor below contributed to the current variations in beak sizes of finch species on the Galapagos Islands? a. Finches dispersed

Applied biology, what are the branches of applied biology?

what are the branches of applied biology?

Succession, Similarities between autotrophic succession and heterotrophic s...

Similarities between autotrophic succession and heterotrophic succession

Define colonization of the gut - probiotic effect, Define colonization of t...

Define colonization of the gut - probiotic effect? It is not clear how probiotics influence the flora and produce a beneficial effect. However, colonization of the gut appears

Maturation phase, Maturation Phase The Maturation phase characterizes...

Maturation Phase The Maturation phase characterizes he transformation of diploid primary spermatocytes into haploid spermatids. The primary spermatocyte divides meiotically 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