Bacterial Diseases

Question 1

What are the routes of transmission for a bacterial virus?

Answer 1

• airborne
  -droplet
  -contact
• vectors
  -fomites (eg. clothes)

Question 2

What are the routes of infection?

Answer 2

• respiritory tract
• urinary tract
  -oral
• gastrointestinal tract
• skin contact
• mucosal
  -wounds

Question 3

Host recognition of the bacterial cell wall?

Answer 3

• Cell wall contains Pathogen Associated Molecular Patterns
  -PGN = Peptiglycan
• LP = Lipoprotien
• LTA = Lipoteichoic acid (only gram positive)
• LPS = Lipopolysaccharide (only gram negetive)

Question 4

What is Contagious Equine Metritis?

Answer 4

• venereal disease of equines
  notifiable
• caused by a gram negative (harder to kill) bacteria
• transmitted by venereal contact (sexual)
  -stallions are asyptomatic

Question 5

What are the symptoms of ?Contagous Equine Metris

Answer 5

• mares can be severely or chronically infected
• no signs of fever
• no syptems of sytematic clinical disease
  -discharge

Question 6

How is contagious equine metris controlled?

Answer 6

• prevention (testing before breeding) (movement testing)
• cancelling breeding when known infected case occurs

Question 7

What type of bacteria causes leptospirosis?

Answer 7

gram negative

Question 8

How is leptospirosis transmitted?

Answer 8

• broken skin
  -consumption or inhalation of contaminated water

Question 9

How is leptospirosis prevented?

Answer 9

vaccination of domestic animals (zoonotic)

Question 10

What is the pathogenesis of leptospirosis?

Answer 10

• Extraellular

Question 11

How does leptosirosis immune avade?

Answer 11

• mimics host compliment proteins
• cleavage of compliment proteins
• inactivation of compliment proteins