types of disease

Question 1

what is a non-infectious disease?

Answer 1

• non-communicable, cannot be passed from one person to another.
• they are caused by toxins, radiation, genetic disorders, poor nutrition.
• e.g, diabetes.

Question 2

what is an infectious disease?

Answer 2

• communicable because they are caused by pathogens.
• pathogens are disease-causing agents. many pathogens are microorganisms, however, many are also beneficial to our health.

Question 3

what is a vector?

Answer 3

• another organism that are used by some pathogens to be transmitted into the host.
• different species to the final host

Question 4

what is virulence?

Answer 4

• a measure of the harmfulness of a pathogen.
• a highly virulent pathogen causes lots of damage to the host and spreads quickly within and between hosts.

Question 5

what is susceptibility?

Answer 5

• an indication of how easily the host will contract a particular disease

Question 6

what are symptoms?

Answer 6

• the observable effects of the pathogen on the host organism.
• helps to identify the disease that a person may have, then appropriate treatment can be concluded.