Tularaemia, Biology


The disease is known by different names like deer fly fever, rabbit fever, Ohara’s disease or tularensis. It is an acute, febrile, granulomatous infection, caused by a highly infectious, Gram negative, nonmotile rod shaped bacterium called Francisella tulaernsis. The organisms may infect a wide range of birds and animals including deer, dog, cat, horse, pig, sheep, rabbit, hare, fish, amphibians and rodents. The infectious agent may be transmitted by ingestion of contaminated meat or water, inhalation of contaminated dust, by direct contact through conjunctiva, mucous membrane with the tissues/secretions of infected animals or by infected arthropods like tick or mosquito.

The disease usually develops 2-5 days after infection, but the incubation period can be as short as 1 day or as long as 3 weeks. Clinical symptoms in man may vary depending upon mode of transmission. There is usually development of ulcers at the site of an infected insect bite sometimes on the surface of the eye, fever, sore throat chills, muscle aches, dry cough, headache, pharyngitis or tonsillitis, nausea, vomiting, diarrhoea, erythematous papule, lymphadenitis and bronchopneumonia. The diagnosis can be made on the basis of history of patient and isolation of organisms from clinical case. Guinea pigs are sensitive laboratory animals. Serodiagnosis is done using agglutination test and ELISA. Proper cooking of meat, avoidance of arthropods, use of protective clothing, rodent control and public health education, particularly to the occupationally exposed people reduce the risk of disease.

Posted Date: 9/20/2012 2:56:55 AM | Location : United States

Related Discussions:- Tularaemia, Assignment Help, Ask Question on Tularaemia, Get Answer, Expert's Help, Tularaemia Discussions

Write discussion on Tularaemia
Your posts are moderated
Related Questions
Weight of Plants - Quantitative Characters Weight is one of the most important quantitative characteristics of plants. Quantitatively growth is best measured on the basis of d

All currently available inotropic agents act to increase Ca 2+ for activation in both normal and failing myocardium (Hurst). The use of inotropic agents in the treatment of CHF is

Explain the Features of Alternaria? 1. Alternaria colony is wooly and compact. Underside is very dark coloured. Colony colour is grayish green or black with gray edges rapidly

Define the Physical activity level? Physical activity level (PAL) is defined as the total energy required over 24 hours divided by the energy needed for basal metabolism over 2

Heartwood differs from sapwood in: 1. Presence of rays and fibres 2. Absence of vessels and parenchyma 3. Having dead and non-conducting elements 4. Being susceptible t

Is the effect of genetic drift likely to be the same in pop 1 and pop 2? How are genetic drift and pop size related? When there is strong selection against the homozygous recessive

Any significant variation in the internal temperature could have damaging effects on the body's enzymes. Homeotherms or warm-blooded animals including human can however generate co

Type of bacterial food poisoning Infection type: The infection type results from the release of toxin in the bowel by microorganisms taken in foods, e.g., Salmonella or Vibr

Which of the following occur in response to an increase in the length of the right knee extensors in response to a quick tap applied to the right patellar tendon?  An increase in t