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Pathogens are organisms (e.g. [[bacteria]], [[viruses]], [[parasites]] and [[fungi]]) that cause [[disease]] in human beings.<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#p</ref>
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'''Pathogens''' are organisms (e.g. [[bacteria]], [[viruses]], [[parasites]] and [[fungi]]) that cause [[disease]] in human beings.<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#p</ref>
    
==References==
 
==References==
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