Rickettsial Diseases 4 H Veterinary Science Extension Veterinary
- Slides: 16
Rickettsial Diseases 4 -H Veterinary Science Extension Veterinary Medicine Texas Agri. Life Extension Service College of Veterinary Medicine and Biomedical Sciences Texas A&M System http: //aevm. tamu. edu
Objectives n Discuss arthropod transmission of rickettsiae n Describe a rickettsial disease of cattle n Decribe a rickettsial disease of swine n Describe a rickettsial disease of horses n Describe two rickettsial diseases of dogs
Review n Infectious diseases n Bacterial diseases n Viral diseases n Fungal diseases n Parasitic diseases n Rickettsial diseases
n Infectious -
Rickettsiae n Definition n A genus of small, rod-shaped, round to pleomorphic microorganisms in the order Rickettsiales. They are true bacteria, gramnegative, and cultivable only in living tissues. Transmitted by lice and ticks, they cause disease in humans and domestic animals but are also found in the cytoplasm of tissue cells of lice, fleas, ticks and mites, which may act as reservoirs and vectors
n Symptoms n Fever n Anemia n Edema n Icterus (jaundice) n Hemorrhages of mucous membranes n Enlarged spleen n Death
n Acute n n n Young animals Summer during vector season Chronic n n Older animals Stressful events
n Transmission n Biological n Examples § Ticks § Sucking lice Live inside arthropods for months n Mechanical n Examples n § Biting flies § Instruments § Blood transfusions n Live short time outside of host
Types
n Anaplasmosis (Gall sickness) n Affects ruminants n Transmission n Mechanical § § n n n Horseflies Deerflies Instruments Ticks Non-contagious Treatable Prevention n Vaccinate n Biosecurity
n Eperythrozoonosis (Epe) n Affects swine n Transmission n Mechanical and biological n n n Sucking lice Instruments Prevention is best treatment
n Ehrilichiosis (Tick fever) n Affects n n Dogs Transmission n Brown dog tick Instruments Blood transfusion
n Rocky mountain spotted fever n Affects n n Dogs Transmission n American god tick Instruments Blood transfusion
n Ehrlichiosis n Affects n n Horses Transmission n Unknown
Diagnosis n Blood smears n Anaplasma n Eperythrozoon n Ehrlichia rickettsial n Serological n Rocky mountains spotted fever
- Line extension vs brand extension
- Science
- Hschub
- Hsc hub
- Type of disease
- Gurus of tqm
- Protein deficiency diseases
- Explain the natural history of disease
- Modern lifestyle and hypokinetic diseases
- Major nutritional deficiency diseases in emergencies
- Abcsses
- Iceberg phenomenon of disease examples
- Human diseases a systemic approach
- Venn diagram communicable and noncommunicable diseases
- Chapter 24 lesson 1 sexually transmitted diseases
- Periradicular
- Section 19-3 diseases caused by bacteria and viruses