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→Types of Agents Causing Disease
====Types of Agents Causing Disease====
====Types of Agents Causing Disease====
Infectious organisms - viruses, bacteria, fungi and parasites
# '''Infectious organisms'''
#* Viruses
#* Bacteria
#* Fungi
#* Parasites
# '''Physical'''
systems within the body
#* Trauma
#* Pressure
#* Heat
#* Cold
#* Radiation
# '''Chemical'''
#* Toxic organic and inorganic substances
#* Toxins produced by infectious organisms
# Nutritional
#* Deficiencies of vitamins and trace elements
#* Excess vitamins and trace elements
# Genetic defects
#* There is a very wide range of potential defects.
#** Some are incompatible with life
#** Others affect specific systems within the body
====Aspects of Disease====
====Aspects of Disease====