Related topics: hiv · antibiotics · bacteria · immune system · virus

Method for discovery of antiviral drugs

The current COVID-19 pandemic has highlighted the need for methods to identify new or repurposed drugs as antivirals. Researchers at Uppsala University and Karolinska Institutet are now presenting a new screening approach ...

Organoid bladders reveal secrets of UTIs

Urinary tract infections (UTIs) are among the most common bacterial infections. They usually require treatment with antibiotics, and almost a quarter of treated cases lead to recurrent infection. The vast majority of UTIs ...

SARS-CoV-2: Achilles' heel of viral RNA

When SARS-CoV-2 infects a cell, it introduces its RNA into it and re-programs it in such a way that the cell first produces viral proteins and then whole viral particles. In the search for active substances against SARS-CoV-2, ...

Pathogenic fungi colonize microplastics in soils

Representatives of numerous pathogenic fungal species are finding new habitat on microplastic particles in the soil and could thus be one of the possible causes of an increase in fungal infections. Researchers from Bayreuth, ...

Deconstructing the infectious machinery of SARS-CoV-2

In February 2020, a trio of bio-imaging experts were sitting amiably around a dinner table at a scientific conference in Washington, D.C., when the conversation shifted to what was then a worrying viral epidemic in China. ...

Will mask wearing continue after COVID?

Mask mandates are in place in Victoria and New South Wales as these states continue to see COVID cases in the community. And public health experts have argued face masks will continue to be an important measure in our fight ...

Study evaluates accuracy of tests for Bartonella infection in dogs

A study led by University of Wisconsin–Madison School of Veterinary Medicine Clinical Assistant Professor Erin Lashnits provides new insights into how best to diagnose Bartonella infection in dogs, a common flea-borne disease ...

A new avenue for fighting drug-resistant bacteria

A small regulatory RNA found in many problematic bacteria, including Escherichia coli, appears to be responsible for managing the response of these bacteria to environmental stresses. Professor Charles Dozois from Institut ...

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Infection

An infection is the detrimental colonization of a host organism by a foreign species. In an infection, the infecting organism seeks to utilize the host's resources to multiply, usually at the expense of the host. The infecting organism, or pathogen, interferes with the normal functioning of the host and can lead to chronic wounds, gangrene, loss of an infected limb, and even death. The host's response to infection is inflammation. Colloquially, a pathogen is usually considered a microscopic organism though the definition is broader, including parasites, fungi, viruses, prions, and viroids. A symbiosis between parasite and host, whereby the relationship is beneficial for the former but detrimental to the latter, is characterised as parasitism. The branch of medicine that focuses on infections and pathogens is infectious disease. "When infection attacks the body, anti-infective drugs can help turn the tide of battle. Four types of anti-infective drugs exist: antibacterial, antiviral, antitubercular, and antifungal. A secondary infection is an infection that occurs during or following treatment of another already existing primary infection.

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