Question

EXPLAIN the causes of infectious diseases
( 5 marker)

Answer 1

Answer:

Infectious diseases can be caused by: Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis. Viruses. Even smaller than bacteria, viruses cause a multitude of diseases — ranging from the common cold to AIDS. Fungi.

Answer 2

Answer:

Infectious diseases are caused by pathogenic organisms like bacteria , viruses , fungi , protozoa , parasites etc .

They spread from person to person through various media like air , water and shared things , eating uncooked or improper food , etc .

Ex → AIDS, tuberculosis , common cold , etc .

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