Pathogens and Diseases They Cause

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Pathogens are microorganismsMicrobes are organisms that are too small to be seen without using a microscope. They include organisms like bacteria, archaea, and single-cell eukaryotes (organisms whose cells have a nucleus e.g. amoeba... More capable of causing disease.

They are broadly classified into:

• viruses
• bacteria
• fungi
• protozoa
• and helminths (worms).

These pathogens can cause a wide range of illnesses, including common colds, strep throat, tuberculosis,