Ed

Question 1

How can you classify disease for the recovery of a patient ?

Answer 1

Infection persists (BSE)
Immunity persists (chicken pox)
Both immunity and infection persists
Neither persist

Question 2

Define Sporadic, Endemic and Epidemic

Answer 2

Sporadic disease occurs rarely and haphazardly in a population.
Endemic disease is present in population continually at expected levels. (Holoendemic, hyperendemic, mesendemic, hypoendemic)
Frequency in population that exceeds expected levels

Question 3

What do incidence, prevalence and attack rate mean in relation to measures of disease

Answer 3

1) number of animals that contract the infection over a time frame
2) number of animals that have the infection over time
3) number of animals that got the disease during epidemic / number of animals initially exposed.

Question 4

Give examples of primary and secondary determinants of disease

Answer 4

Primary = major cause eg pathogen
Secondary
>intrinsic = genetics, age, breed, sex.
>extrinsic = environmental factors, management factors