Cat scratch disease, Biology

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.

Posted Date: 9/20/2012 2:59:19 AM | Location : United States







Related Discussions:- Cat scratch disease, Assignment Help, Ask Question on Cat scratch disease, Get Answer, Expert's Help, Cat scratch disease Discussions

Write discussion on Cat scratch disease
Your posts are moderated
Related Questions
Q. What is the difference between primary ecological succession and secondary ecological succession? The Primary ecological succession is the changing sequence of communities f

What is xaxim? Most pteridophytes have subterraneous stems parallel to the substrate known as rhizomes. Xaxim is a type of pteridophyte with an aerial stem generally perpendicu

Define Molisch's Test or alpha naphthol reaction? The Molisch test is a common test for the existence of carbohydrates. Principle The reaction is due to the formation of

Skin The skin or integument is the outer covering of the body and have appendages i.e. nails and hairs. The outer layer of skin is known as epidermis; the inner layer is dermis

Q. How is HIV transmitted? What is the disease caused by this virus? The HIV (human immunodeficiency virus) is supposed to be transmitted through blood, semen, vaginal secretio

Explain Indications for Surgery in Aortic Aneurysm? Indications for Surgery :  Thoracic aortic aneurysms are classified by the portion of aorta involved - ascending, arch,

Explain Diffusion and Osmosis in cell structure? Diffusion and Osmosis :  Diffusion through a cell membrane occurs as it does elsewhere, from an area of high concentration of

Agro Industrial-Baling and cubing Bailing is one of the most common processes used for the conservation of green fodders and grasses in many developed countries and attempts ha

Define the Recommended Dietary Allowance of Vitamin E? The requirements for the vitamin E are expressed in terms of tocopherol equivalents (TE) as mentioned earlier - 8 mg fo

Define about the Ultraviolet rays - carcinogenic? Ultraviolet rays: There is ample evidence from epidemiological studies that ultra violet rays derived from the sun induce an i