Infectious Diseases

Question 1

What is a non-infectious disease?

Answer 1

Not caused by infectious agents and cannot be transmitted from one person to another. The onset may be due to environmental, lifestyle, and genetic factors.

Question 2

What is an infectious disease?

Answer 2

Caused by pathogens, which invade your body tissues. They can be transmitted from one person to another by the spread of microbes.

Question 3

What is a pathogen?

Answer 3

Causes a number of diseases that range in severity and how they’re transmitted.

Question 4

What are protozoa?

Answer 4

Protozoa are single celled, eukaryotic organisms that belong to the protist kingdom. Some protozoans can cause cysts.

Question 5

What is a virus?

Answer 5

Sub-microscopic infectious agent that replicates only inside the living cells of an organism. Found as intracellular parasites and cause many plant and animal diseases.

Question 6

What is a prion?

Answer 6

Prions are unusual infectious particles - cause of diseases like mad cow disease.