Which of the following is the primary cause of communicable diseases that spread from one person to another?
Bacteria and viruses
Communicable diseases are, by definition, illnesses caused by infectious pathogens such as bacteria and viruses that can be transmitted from an infected person to another.
These microorganisms spread through routes like direct contact, air, water, or contaminated food, causing infections that pass between individuals.
Genetic mutations, poor nutrition, and lack of exercise can affect an individual's health, but they are not infectious agents and do not cause diseases that spread from person to person.
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