M1 - Infectious disease

Question 1

What is an obligate pathogen?

Answer 1

Only grows in the absence of oxygen,

Question 2

What is Koch’s postulates (germ theory)?

Answer 2

A set of parameters to try and find something that is infectious.

Question 3

What is a commensal/ symbiotic pathogen?

Answer 3

organism that’s part of the normal flora, is endogenous and often part of a mutualistic relationship.

Question 4

What is an opportunistic pathogen ?

Answer 4

organism that causes infection when opportunity/ change in natural immunity arises e.g., in an immunocompromised individual.

Question 5

What is an organism that causes infection when opportunity/ change in natural immunity arises e.g., in an immunocompromised individual?

Answer 5

Opportunistic pathogen

Question 6

What is the name of an organisms that grows in a culture by accident?

Answer 6

Contaminant

Question 7

What is virulence?

Answer 7

the capacity of a microbe to cause damage to the host.

Question 8

What is the capacity of a microbe to cause damage to the host known as?

Answer 8

Virulence

Question 9

Infective material derived from inside the patients body is known as?

Answer 9

Endogenous

Question 10

Infective material derived from outside the patients body is known as?

Answer 10

Exogenous

Question 11

What type of bacteria is the oral cavity dominated by?

Answer 11

Streptococci

Question 12

What are the 6 stages of the parasitic lifecycle of an endogenous bacteria?

Answer 12

1. transmission/ spread
2. exit/ entry
3. adhere/ colonise and invade
4. evade host defences
5. multiply/ complete life cycle
6. exit host

Question 13

The study of the occurrence, spread and control of disease is known as?

Answer 13

epidemiology