Lecture 6

Question 1

chain of infection

Answer 1

prevention if achieved by eliminating or isolating the source of infectious organism, preventing the transmission of diseases and reducing host susceptibility

Question 2

choice of disease prevention and control strategies - what needs to be assessed?

Answer 2

risk
feasibility
cost
effectiveness

Question 3

to effectively isolate all sick and carrier animals they are categorised as:

Answer 3

sick animals
- need to be isolated and treated

suspects of disease
- disease should be confirmed or ruled out by diagnostic methods

suspected of infection
- may be infected but in incubation period so need to stay in this group for the length of the incubation period

health
- no direct or indirect contact to animals from any other group

Question 4

transmission prevention

Answer 4

transplacental
- pregnant animals kept away from other animals

best place for transmission of infectious disease = intensive animal farming and animal shelters so prevention relies on biosecurity

transmission in extensive farming = quarantining and vaccinating new arrivals. don’t graze where infected animals were

Question 5

portal of entry prevention

Answer 5

avoid
- all kinds of injuries
- arthropod bites
- maceration of skin