M5. The AGENT factors of disease

Question 1

• any element, substance or force whether living or non-living thing
• presence or absence can initiate or perpetuate a disease process

Answer 1

Agent

Question 2

Types of Agents:

Answer 2

1. living
2. non-living
3. physical
4. mechanical
5. endogenous
6. exogenous

Question 3

INHERENT characteristics of agent of disease:

Answer 3

1. physical feature
2. biological requirement
3. chemical composition
4. resistance

Question 4

CHARACTERISTIC of AGENT in relation to environment:

Answer 4

1. reservoir
2. source of infection
3. mode of transmission

Question 5

CHARACTERISTIC of AGENT in relation to man:

Answer 5

1. infectivity
2. pathogenecity
3. virulence
4. antigenicity

Question 6

• ability to gain access
• adapt to the human host to the extent of finding lodgement and multiplication

we still DON’T HAVE signs and symptoms here.

Answer 6

Infectivity

Question 7

measures the ability of the agent when lodged in the body set up a specific reaction.

MAYROON nang signs and symptoms.

Answer 7

Pathogenecity

Question 8

refers to the severity of the reaction produce & is usually measured in terms of fatality.

Answer 8

Virulence

the MORE virulent, the MORE fatal.

Question 9

ability to stimulate the host to produce antibody

Answer 9

Antigenicity