Infectious Diseases (human): Difference between revisions
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imported>Nancy Sculerati MD (→Host reactions: added category cz live) |
imported>David H. Barrett m (Removed a couple of unnecessary capitals.) |
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Infectious | {{subpages}} | ||
'''Infectious diseases''' are those communicable illnesses that are caused by [[germ|germs]], most commonly by either [[bacteria]] or [[virus|viruses]]. [[Plant|Plants]] and [[animal|animals]] are subject to infectious diseases, but the term is also used to refer to a branch of [[Medicine|medicine]]. This article focuses on human infectious disease. | |||
==Infective agents== | ==Infective agents== | ||
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===Prions=== | ===Prions=== | ||
A prion is the simplest substance that can cause an infectious disease. A single protein, a prion is a particle that, when ingested, cause the susceptible host to induce additional prions inside the body. These abnormally folded proteins cause malfunctions in normal physiology and so produce disease. | A '''[[prion]]''' is the simplest substance that can cause an infectious disease. A single protein, a prion is a particle that, when ingested, cause the susceptible host to induce additional prions inside the body. These abnormally folded proteins cause malfunctions in normal physiology and so produce disease. | ||
===Viruses=== | ===Viruses=== | ||
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===Multicellular parasites (worms)=== | ===Multicellular parasites (worms)=== | ||
===Arthropods=== | |||
==Host reactions== | ==Host reactions== | ||
Latest revision as of 14:36, 14 August 2008
Infectious diseases are those communicable illnesses that are caused by germs, most commonly by either bacteria or viruses. Plants and animals are subject to infectious diseases, but the term is also used to refer to a branch of medicine. This article focuses on human infectious disease.
Infective agents
Prions
A prion is the simplest substance that can cause an infectious disease. A single protein, a prion is a particle that, when ingested, cause the susceptible host to induce additional prions inside the body. These abnormally folded proteins cause malfunctions in normal physiology and so produce disease.