Describe community issues that influence health and explain various modes of
transmission of infectious diseases
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Communicable diseases are caused by infectious agents that can be transmitted to susceptible individuals from an infected person, or from other animals, objects or the environment. Infectious agents include helminths, protozoa, bacteria, viruses and fungi.
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A communicable disease is one that is spread from one person to another through a variety of ways that include: contact with blood and bodily fluids; breathing in an airborne virus; or by being bitten by an insect.
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