|
Home > Preview
The flashcards below were created by user
Vet_2b
on FreezingBlue Flashcards.
-
What disease conditions are caused by Klebsiella?
- Metritis in mares
- mastitis in cows (wood shaving associated)
- UTI in dogs
- Otitis externa in dogs
- Resp. infections, septicemia, diarrhea in companion birds
-
What disease conditions are caused by Klebsiella but not by E.coli and vice versa?
- E.coli produces diarrhea whereas Klebsiella only produces diarrhea in companion birds
- Klebsiella produces Otitis externa in dogs
- Mastitis caused by klebsiella is the result of wood shavings
-
What is a characteristic of Klebsiella when viewed on blood agar? Mac?
- forms a thick mucoid capsule on BA
- LF on Mac (PINK)
-
What should be done before treatment of Klebsiella with an antimicrobial?
Culture and sensitivity testing as Klebsiella is highly resistant to many antibacterials
-
What does Salmonella look like on Blood Agar and MAC?
- Grows on blood agar
- Clear on MAC as it is a non-lactose fermenter
-
What can be used to properly ID suspected Salmonella cultures?
- slide agglutination test with polyvalent antiserum
- ie identification via serology due to its multitude of serovars
-
What are the major species of Salmonella and which is more pathogenic?
- S. enterica (more pathogenic)
- S. bongori
-
Where is Salmonella found?
food animals, birds, rats, mice, fish can all be carriers
fish meal, bone meal, and milk products
-
What is the mechanism by which salmonella is transmitted?
- stress, antibiotic overuse, and fasting lead to the colonization and fecal shedding of salmonella
- can be picked up by other animals
This is especially true of tetracylcins in horses which serve to kill useful bacteria and contribute to the spread of salmonella
-
What are the clinical manifestations of Salmonella?
- ENTERITIS (mucus, fibrin, blood)
- SEPTICEMIA (fever, depression, death)
- ABORTION (septicemia in pregnant animals leads to abortion)
-
What is a main difference between the clinical manifestations of Salmonella vs. E.coli?
E.coli does not cause abortion in affected animals
-
How can salmonella become septic? What is a possible sequele of septicemia?
- necrotizing ulcerative gut lesions lead to septicemia
- septicemia can lead to pneumonia, cyanosis of the extremitites
-
Which serovar of Salmonella can cause disease across species?
S. typhimurium
-
What serovars of salmonella can effect horses and what diseases do they cause?
- S typhimuruim mostly (associated with stress and immuno def)
- causes diarrhea, endotoxemia, death in foals
-
What serovars cause disease is dogs? poultry? swine? cats? cattle? of salmonella
- Dogs and cats: rare to have clinical dx
- Poultry: S. gallinarum, and S. pullorum can cause enteritis and septicemia though not common in canada
- poultry can also be common carriers
- Swine: S. typhimurium ( enteritis) and S. choleraesuis (septicemia)
- Cattle: S. typhimurium and S. dublin both of which cause enteritis, septicemia and abortion
-
What is the pathogenesis of Salmonella?
- Colonize in the small intestine and invade the enterocytes to cause inflammation and therefore diarrhea
- Macrophages and neutrophils, blood and lymphatics to the tissue and endotoxin mediated fever and vascular damage
|
|
Get the free mobile app
Take the Quiz
Learn more
Learn more