Live attenuated vaccine
Live Attenuated Vaccine
A Live Attenuated Vaccine (pronunciation: /laɪv ætˈɛn.ju.eɪ.tɪd ˈvæk.siːn/) is a type of vaccine that uses a weakened form of a pathogen, including viruses or bacteria, to stimulate an immune response in the body.
Etymology
The term "Live Attenuated Vaccine" is derived from the English words "live" and "attenuated". "Live" refers to the fact that the vaccine contains a living, but weakened, form of the pathogen. "Attenuated" comes from the Latin word "attenuare", which means "to weaken".
Related Terms
- Vaccine: A biological preparation that provides active acquired immunity to a particular infectious disease.
- Pathogen: An organism that causes disease.
- Virus: A small infectious agent that replicates only inside the living cells of an organism.
- Bacteria: A type of biological cell that constitutes a large domain of prokaryotic microorganisms.
- Immune response: The reaction of the cells and fluids of the body to the presence of a substance which is not recognized as a constituent of the body itself.
- Immunization: The process by which an individual's immune system becomes fortified against an agent.
- Infectious disease: A disease resulting from the presence and activity of a pathogenic microbial agent.
See Also
- Inactivated vaccine
- Subunit, recombinant, polysaccharide, and conjugate vaccines
- Toxoid vaccines
- DNA vaccines
- Recombinant vector vaccines
External links
- Medical encyclopedia article on Live attenuated vaccine
- Wikipedia's article - Live attenuated vaccine
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