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38-543: [REDACTED] Look up eradicate , eradicated , or eradication in Wiktionary, the free dictionary. The word " eradication " is derived from Latin word "radix" which means "root". It may refer to: Eradication of infectious diseases , the reduction of the global incidence of an infectious disease in its host population to zero Extirpation , or intentional local extinction, of an introduced species Genocide ,
76-496: 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,
114-487: A population of insects or vermin as part of pest control A heraldic term denoting a tree that has been uprooted; see eradication (heraldry) Total removal of a given pathogen from an individual (medical or clinical use), also known as clearance of an infection , particularly in the context of HIV A song on the album The Price of Existence performed by the death metal band All Shall Perish See also [ edit ] Extirpation Topics referred to by
152-509: A process involving meiosis and fertilization . Meiosis involves the intimate pairing of homologous chromosomes and recombination between them. Examples of eukaryotic pathogens capable of sex include the protozoan parasites Plasmodium falciparum , Toxoplasma gondii , Trypanosoma brucei , Giardia intestinalis , and the fungi Aspergillus fumigatus , Candida albicans and Cryptococcus neoformans . Viruses may also undergo sexual interaction when two or more viral genomes enter
190-437: A theorized equilibrium between a pathogen spreading to additional hosts to parasitize resources, while lowering their virulence to keep hosts living for vertical transmission to their offspring. Algae are single-celled eukaryotes that are generally non-pathogenic. Green algae from the genus Prototheca lack chlorophyll and are known to cause the disease protothecosis in humans, dogs, cats, and cattle, typically involving
228-423: A variety of bacterial, viral, fungal, and parasitic pathogens, cholera is only caused by some strains of Vibrio cholerae . Additionally, some pathogens may only cause disease in hosts with an immunodeficiency . These opportunistic infections often involve hospital-acquired infections among patients already combating another condition. Infectivity involves pathogen transmission through direct contact with
266-413: A variety of immunodeficiency disorders caused by viruses related to human immunodeficiency virus (HIV), such as BIV and FIV . Humans can be infected with many types of pathogens, including prions, viruses, bacteria, and fungi, causing symptoms like sneezing, coughing, fever, vomiting, and potentially lethal organ failure . While some symptoms are caused by the pathogenic infection, others are caused by
304-758: A wide array of pathogens and it has been estimated that only 3% of the disease caused by plant pathogens can be managed. Animals often get infected with many of the same or similar pathogens as humans including prions, viruses, bacteria, and fungi. While wild animals often get illnesses, the larger danger is for livestock animals. It is estimated that in rural settings, 90% or more of livestock deaths can be attributed to pathogens. Animal transmissible spongiform encephalopathy (TSEs) involving prions include bovine spongiform encephalopathy (mad cow disease), chronic wasting disease , scrapie , transmissible mink encephalopathy , feline spongiform encephalopathy , and ungulate spongiform encephalopathy. Other animal diseases include
342-414: A wide variety of issues such as shorter plant height, growths or pits on tree trunks, root or seed rot, and leaf spots. Common and serious plant fungi include the rice blast fungus , Dutch elm disease , chestnut blight and the black knot and brown rot diseases of cherries, plums, and peaches. It is estimated that pathogenic fungi alone cause up to a 65% reduction in crop yield. Overall, plants have
380-510: 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. Diseases in humans that are caused by infectious agents are known as pathogenic diseases. Not all diseases are caused by pathogens, such as black lung from exposure to
418-399: Is different from Wikidata All article disambiguation pages All disambiguation pages Pathogen In biology , a pathogen ( Greek : πάθος , pathos "suffering", "passion" and -γενής , -genēs "producer of"), 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
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#1732765099708456-663: Is resistant to the commonly prescribed beta-lactam antibiotics . A 2013 report from the Centers for Disease Control and Prevention (CDC) estimated that in the United States, at least 2 million people get an antibiotic-resistant bacterial infection annually, with at least 23,000 of those patients dying from the infection. Due to their indispensability in combating bacteria, new antibiotics are required for medical care. One target for new antimicrobial medications involves inhibiting DNA methyltransferases , as these proteins control
494-574: Is the most common cause of thrush , and Cryptococcus neoformans , which can cause a severe form of meningitis . Typical fungal spores are 4.7 μm long or smaller. Prions are misfolded proteins that transmit their abnormal folding pattern to other copies of the protein without using nucleic acids . Besides obtaining prions from others, these misfolded proteins arise from genetic differences, either due to family history or sporadic mutations. Plants uptake prions from contaminated soil and transport them into their stem and leaves, potentially transmitting
532-637: The Baltimore classification separates viruses by seven classes of mRNA production: Protozoans are single-celled eukaryotes that feed on microorganisms and organic tissues. Many protozoans act as pathogenic parasites to cause diseases like malaria , amoebiasis , giardiasis , toxoplasmosis , cryptosporidiosis , trichomoniasis , Chagas disease , leishmaniasis , African trypanosomiasis (sleeping sickness), Acanthamoeba keratitis , and primary amoebic meningoencephalitis (naegleriasis). Parasitic worms (helminths) are macroparasites that can be seen by
570-439: The anthrax vaccine and pneumococcal vaccine . Many other bacterial pathogens lack vaccines as a preventive measure, but infection by these bacteria can often be treated or prevented with antibiotics . Common antibiotics include amoxicillin , ciprofloxacin , and doxycycline . Each antibiotic has different bacteria that it is effective against and has different mechanisms to kill that bacteria. For example, doxycycline inhibits
608-405: The echinocandin family of drugs and fluconazole . While algae are commonly not thought of as pathogens, the genus Prototheca causes disease in humans . Treatment for protothecosis is currently under investigation, and there is no consistency in clinical treatment. Many pathogens are capable of sexual interaction. Among pathogenic bacteria , sexual interaction occurs between cells of
646-449: The tobacco mosaic virus which caused scientist Martinus Beijerinck to coin the term "virus" in 1898. Bacterial plant pathogens cause leaf spots, blight, and rot in many plant species. The most common bacterial pathogens for plants are Pseudomonas syringae and Ralstonia solanacearum , which cause leaf browning and other issues in potatoes, tomatoes, and bananas. Fungi are another major pathogen type for plants. They can cause
684-676: The Clustered Regularly Interspaced Short Palindromic Repeats ( CRISPR ) associated with bacteriophages, removing the viral genes to avoid infection. This mechanism has been modified for artificial CRISPR gene editing . Plants can play host to a wide range of pathogen types, including viruses, bacteria, fungi, nematodes, and even other plants. Notable plant viruses include the papaya ringspot virus , which has caused millions of dollars of damage to farmers in Hawaii and Southeast Asia, and
722-508: The bodily fluids or airborne droplets of infected hosts, indirect contact involving contaminated areas/items, or transfer by living vectors like mosquitos and ticks . The basic reproduction number of an infection is the expected number of subsequent cases it is likely to cause through transmission. Virulence involves pathogens extracting host nutrients for their survival, evading host immune systems by producing microbial toxins and causing immunosuppression . Optimal virulence describes
760-403: The context of HIV A song on the album The Price of Existence performed by the death metal band All Shall Perish See also [ edit ] Extirpation Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Eradication . If an internal link led you here, you may wish to change the link to point directly to
798-414: The deliberate, systematic destruction of an ethnic, religious or national group of people Intentional extermination of a population of insects or vermin as part of pest control A heraldic term denoting a tree that has been uprooted; see eradication (heraldry) Total removal of a given pathogen from an individual (medical or clinical use), also known as clearance of an infection , particularly in
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#1732765099708836-472: The free dictionary. The word " eradication " is derived from Latin word "radix" which means "root". It may refer to: Eradication of infectious diseases , the reduction of the global incidence of an infectious disease in its host population to zero Extirpation , or intentional local extinction, of an introduced species Genocide , the deliberate, systematic destruction of an ethnic, religious or national group of people Intentional extermination of
874-772: The highest disease burdens , killing 1.6 million people in 2021, mostly in Africa and Southeast Asia. Bacterial pneumonia is primarily caused by Streptococcus pneumoniae , Staphylococcus aureus , Klebsiella pneumoniae , and Haemophilus influenzae . Foodborne illnesses typically involve Campylobacter , Clostridium perfringens , Escherichia coli , Listeria monocytogenes , and Salmonella . Other infectious diseases caused by pathogenic bacteria include tetanus , typhoid fever , diphtheria , and leprosy . Fungi are eukaryotic organisms that can function as pathogens. There are approximately 300 known fungi that are pathogenic to humans, including Candida albicans , which
912-515: The host genome, and hijack the host's machinery to produce hundreds of new viruses until the cell bursts open to release them for additional infections. The lytic cycle describes this active state of rapidly killing hosts, while the lysogenic cycle describes potentially hundreds of years of dormancy while integrated in the host genome. Alongside the taxonomy organized by the International Committee on Taxonomy of Viruses (ICTV),
950-458: The immune system of the host, so that when the potential host encounters the virus in the wild, the immune system can defend against infection quickly. Vaccines designed against viruses include annual influenza vaccines and the two-dose MMR vaccine against measles , mumps , and rubella . Vaccines are not available against the viruses responsible for HIV/AIDS , dengue , and chikungunya . Treatment of viral infections often involves treating
988-420: The immune system's efforts to kill the pathogen, such as feverishly high body temperatures meant to denature pathogenic cells. Despite many attempts, no therapy has been shown to halt the progression of prion diseases . A variety of prevention and treatment options exist for some viral pathogens. Vaccines are one common and effective preventive measure against a variety of viral pathogens. Vaccines prime
1026-499: The intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Eradication&oldid=1192575273 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages eradicate (Redirected from Eradicate ) [REDACTED] Look up eradicate , eradicated , or eradication in Wiktionary,
1064-572: The levels of expression for other genes, such as those encoding virulence factors. Infection by fungal pathogens is treated with anti-fungal medication. Athlete's foot , jock itch , and ringworm are fungal skin infections that are treated with topical anti-fungal medications like clotrimazole . Infections involving the yeast species Candida albicans cause oral thrush and vaginal yeast infections . These internal infections can either be treated with anti-fungal creams or with oral medication. Common anti-fungal drugs for internal infections include
1102-583: The naked eye. Worms live and feed in their living host, acquiring nutrients and shelter in the digestive tract or bloodstream of their host. They also manipulate the host's immune system by secreting immunomodulatory products which allows them to live in their host for years. Helminthiasis is the generalized term for parasitic worm infections, which typically involve roundworms , tapeworms , and flatworms . While bacteria are typically viewed as pathogens, they serve as hosts to bacteriophage viruses (commonly known as phages). The bacteriophage life cycle involves
1140-453: The pollutant coal dust , genetic disorders like sickle cell disease , and autoimmune diseases like lupus . Pathogenicity is the potential disease-causing capacity of pathogens, involving a combination of infectivity (pathogen's ability to infect hosts) and virulence (severity of host disease). Koch's postulates are used to establish causal relationships between microbial pathogens and diseases. Whereas meningitis can be caused by
1178-822: The prions to herbivorous animals . Additionally, wood, rocks, plastic, glass, cement, stainless steel, and aluminum have been shown binding, retaining, and releasing prions, showcasing that the proteins resist environmental degradation. Prions are best known for causing transmissible spongiform encephalopathy (TSE) diseases like Creutzfeldt–Jakob disease (CJD), variant Creutzfeldt–Jakob disease (vCJD), Gerstmann–Sträussler–Scheinker syndrome (GSS), fatal familial insomnia (FFI), and kuru in humans. While prions are typically viewed as pathogens that cause protein amyloid fibers to accumulate into neurodegenerative plaques, Susan Lindquist led research showing that yeast use prions to pass on evolutionarily beneficial traits. Not to be confused with virusoids or viruses, viroids are
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1216-589: The same species by the process of genetic transformation . Transformation involves the transfer of DNA from a donor cell to a recipient cell and the integration of the donor DNA into the recipient genome through genetic recombination . The bacterial pathogens Helicobacter pylori , Haemophilus influenzae , Legionella pneumophila , Neisseria gonorrhoeae , and Streptococcus pneumoniae frequently undergo transformation to modify their genome for additional traits and evasion of host immune cells. Eukaryotic pathogens are often capable of sexual interaction by
1254-419: The same term [REDACTED] This disambiguation page lists articles associated with the title Eradication . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Eradication&oldid=1192575273 " Category : Disambiguation pages Hidden categories: Short description
1292-530: The smallest known infectious pathogens. Viroids are small single-stranded, circular RNA that are only known to cause plant diseases, such as the potato spindle tuber viroid that affects various agricultural crops. Viroid RNA is not protected by a protein coat, and it does not encode any proteins, only acting as a ribozyme to catalyze other biochemical reactions. Viruses are generally between 20–200 nm in diameter. For survival and replication, viruses inject their genome into host cells, insert those genes into
1330-688: The soil-associated species Prototheca wickerhami . Bacteria are single-celled prokaryotes that range in size from 0.15 and 700 μM. While the vast majority are either harmless or beneficial to their hosts, such as members of the human gut microbiome that support digestion, a small percentage are pathogenic and cause infectious diseases. Bacterial virulence factors include adherence factors to attach to host cells, invasion factors supporting entry into host cells, capsules to prevent opsonization and phagocytosis , toxins, and siderophores to acquire iron. The bacterial disease tuberculosis , primarily caused by Mycobacterium tuberculosis , has one of
1368-537: The symptoms of the infection, rather than providing medication to combat the viral pathogen itself. Treating the symptoms of a viral infection gives the host immune system time to develop antibodies against the viral pathogen. However, for HIV, highly active antiretroviral therapy (HAART) is conducted to prevent the viral disease from progressing into AIDS as immune cells are lost. Much like viral pathogens, infection by certain bacterial pathogens can be prevented via vaccines. Vaccines against bacterial pathogens include
1406-461: The synthesis of new proteins in both gram-negative and gram-positive bacteria , which makes it a broad-spectrum antibiotic capable of killing most bacterial species. Due to misuse of antibiotics, such as prematurely ended prescriptions exposing bacteria to evolutionary pressure under sublethal doses, some bacterial pathogens have developed antibiotic resistance . For example, a genetically distinct strain of Staphylococcus aureus called MRSA
1444-420: The viruses injecting their genome into bacterial cells, inserting those genes into the bacterial genome, and hijacking the bacteria's machinery to produce hundreds of new phages until the cell bursts open to release them for additional infections. Typically, bacteriophages are only capable of infecting a specific species or strain. Streptococcus pyogenes uses a Cas9 nuclease to cleave foreign DNA matching
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