What is the difference between Pyrogen and Pathogen?

The difference between pyrogen and pathogen

is that “pyrogen” is any substance that produces fever, or a rise in body temperature and “pathogen” is any organism or substance, especially a microorganism, capable of causing disease, such as bacteria, viruses, protozoa or fungi. Microorganisms are not considered to be pathogenic until they have reached a population size that is large enough to cause disease.

pyrogen

pathogen

Noun

  • (medicine) Any substance that produces fever, or a rise in body temperature

Synonyms

  • pyrectic

Noun

  • (pathology, immunology) Any organism or substance, especially a microorganism, capable of causing disease, such as bacteria, viruses, protozoa or fungi. Microorganisms are not considered to be pathogenic until they have reached a population size that is large enough to cause disease.

Examples

  • In his first book since the 2008 essay collection Natural Acts: A Sidelong View of Science and Nature, David Quammen looks at the natural world from yet another angle: the search for the next human pandemic, what epidemiologists call “the next big one." His quest leads him around the world to study a variety of suspect zoonoses—animal-hosted pathogens that infect humans.