Contact immunity
Contact immunity is a form of immunity that occurs when an individual becomes immune to a disease after coming into contact with an infected person or animal. This can occur through direct contact with the infected individual or through indirect contact with surfaces or objects that the infected individual has touched.
Pronunciation
Contact immunity is pronounced as /ˈkɒntækt ɪˈmjuːnɪti/.
Etymology
The term "contact immunity" is derived from the English words "contact," meaning to touch or meet, and "immunity," which refers to the ability of an organism to resist a particular infection or toxin by the action of specific antibodies or sensitized white blood cells.
Related Terms
- Herd immunity: A form of indirect protection from infectious disease that can occur with some diseases when a sufficient percentage of a population has become immune to an infection, whether through vaccination or previous infections, thereby providing a measure of protection for individuals who are not immune.
- Active immunity: The immunity that results from the production of antibodies by the immune system in response to the presence of an antigen.
- Passive immunity: The short-term immunity that results from the introduction of antibodies from another person or animal.
- Innate immunity: The immunity that an organism is born with.
- Adaptive immunity: The immunity that an organism develops over time in response to exposure to specific pathogens or vaccines.
See Also
External links
- Medical encyclopedia article on Contact immunity
- Wikipedia's article - Contact immunity
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