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

Disarming bacteria with mucus and phages

Millions of people are treated with antibiotics each year for infections or as a preventative measure. The Centers for Disease Control and Prevention reports that at least 2.8 million people are infected with antibiotic-resistant ...

Bartonella bacteria found in hemangiosarcoma tumors from dogs

Researchers from North Carolina State University have found a very high prevalence of Bartonella bacteria in tumors and tissues—but not blood samples—taken from dogs with hemangiosarcoma, a cancer of the blood vessels. ...

First robust cell culture model for the hepatitis E virus

Even though hepatitis E causes over 3 million infections and about 70,000 deaths each year, the virus has been little studied. Now, a research team from Bochum and Hanover has developed a robust cell model of the pathogen. ...

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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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