Pathogen

In biology, a pathogen in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term pathogen came into use in the 1880s. Typically, the term pathogen is used to describe an infectious microorganism or agent, such as a virus, bacterium, protozoan, prion, viroid, or fungus. Small animals, such as helminths and insects, can also cause or transmit disease. However, these animals are usually referred to as parasites rather than pathogens. The scientific study of microscopic organisms, including microscopic pathogenic organisms, is called microbiology, while parasitology refers to the scientific study of parasites and the organisms that host them. There are several pathways through which pathogens can invade a host. The principal pathways have different episodic time frames, but soil has the longest or most persistent potential for harboring a pathogen.

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Plant pathogen evades immune system by targeting the microbiome

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Secret garden: Drug-resistant pathogen strains meet and evolve on plant bulbs

Comparing the pathogen numbers in backyard and commercial composts

New WHO group aims to improve efforts to find pathogen origins

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Countries hosting dangerous pathogen labs lack biosecurity

Irish potato famine pathogen stoked outbreaks on six continents

Irish potato famine pathogen stoked outbreaks on six continents