Antibiosis describes the phenomenon where one organism stops or slows the growth of another organism using certain substances. In medicine, this mostly refers to the targeted fight against bacteria using special medicines called antibiotics.
What is behind the term?
The word originally comes from Greek and means something like "opposition of life". It describes how living things compete with each other and can affect one another. In nature, certain fungi and bacteria already use this strategy to defend themselves against other germs. They produce substances that harm or kill other microorganisms. Scientists discovered these natural substances and used them as the basis for modern medicines.
In everyday medical use, "antibiosis" is mostly used as a general term for the targeted suppression of bacteria using antibiotics. The term is less commonly used when talking about fighting viruses or fungi. There are separate terms for those, such as "antiviral" or "antifungal".
Where does the term antibiosis appear?
In doctor's letters or medical reports, the word "antibiosis" often appears in connection with a treatment. For example, if a report says "start of antibiosis" or "antibiosis was initiated", it means that a course of antibiotics has been started. Sometimes the phrase "under ongoing antibiosis" is used to show that antibiotic treatment is currently taking place.
The term itself does not describe a specific medicine. It describes the whole process of fighting germs using these substances. It is not about a particular tablet or injection, but about the principle of making bacteria harmless inside the body.
What does antibiosis mean for your own medical report?
If a medical report mentions antibiosis, it usually refers to a planned or already ongoing treatment for a bacterial infection. This can happen with, for example, pneumonia, a bladder infection, or after an operation where there is a higher risk of infection.
The decision to use antibiosis is made when there is a suspicion or confirmed diagnosis of a bacterial infection. The aim is to fight the harmful bacteria so that the inflammation does not spread and the body can recover more quickly.
Are there risks or side effects?
Many people wonder whether antibiosis is dangerous or what side effects might occur. As a general rule, antibiotics are very effective against bacteria but do not work against viruses, such as those that cause a common cold. They should only be used when truly necessary, to avoid the development of resistance. This means preventing bacteria from becoming immune to the medicines.
Possible side effects include digestive problems, allergic reactions, or a disruption of the natural gut flora. Most side effects are temporary and go away once the medicine is stopped. If you are unsure or have severe symptoms, always seek medical advice.
Why is antibiosis so important in medicine?
The targeted suppression of bacteria through antibiosis has completely changed the treatment of many infectious diseases. In the past, even minor wounds or simple infections could be life-threatening because there were no effective medicines. Today, many bacterial illnesses can be treated precisely and complications can be avoided.
However, responsible use of antibiotics is essential to keep these medicines effective in the future. Not every infection needs antibiosis. For viral infections such as flu or a cold, it has no effect at all.
When is antibiosis used outside of medicine?
The term is also used in biology to describe how different living things interact with one another. In soil and on plants, antibiosis is constantly taking place. Certain microorganisms release substances that keep other germs under control. Researchers have used this principle to develop new antibiotics.
In a medical context, however, antibiosis almost always refers to the targeted treatment of bacterial infections with specific medicines.
A brief summary
Antibiosis describes the targeted suppression or killing of bacteria using certain substances. In medicine, it usually refers to treatment with antibiotics, which is used for bacterial infections. The term often appears in doctor's letters or medical reports when such a treatment has been started or is being carried out. The decision to use antibiosis is always carefully considered to ensure the best possible treatment and to avoid side effects.
Scientific sources
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Clardy J, Fischbach MA, Walsh CT. New antibiotics from bacterial natural products. Nat Biotechnol. 2006;24(12):1541–1550. DOI: 10.1038/nbt1266
Fleming A. On the antibacterial action of cultures of a Penicillium, with special reference to their use in the isolation of B. influenzae. Br J Exp Pathol. 1929;10(3):226–236. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2048009/
Kohanski MA, Dwyer DJ, Collins JJ. How antibiotics kill bacteria: from targets to networks. Nat Rev Microbiol. 2010;8(6):423–435. DOI: 10.1038/nrmicro2333
Laxminarayan R, et al. Antibiotic resistance—the need for global solutions. Lancet Infect Dis. 2013;13(12):1057–1098. DOI: 10.1016/S1473-3099(13)70318-970318-9)
