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or agent, such as a virus , bacterium , protozoan , prion , viroid , or fungus . [ ] [ ] [ ] small animals, such as certain kinds of worms and insect larvae, can also produce disease. however, these animals are usually, in common parlance, referred to as parasites rather than pathogens. the scientific
pseudomonas , and foodborne illnesses , which can be caused by bacteria such as shigella , campylobacter , and salmonella . pathogenic bacteria also cause infections such as tetanus , typhoid fever , diphtheria , syphilis , and leprosy . fungi[ edit ] main article: pathogenic fungi fungi are eukaryotic...
https://en.wikipedia.org/wiki/Pathogenic