cowpox
Definition
Noun: A mild, contagious viral disease of cattle, characterized by pustular lesions on the udder and teats. Historically, the virus (Vaccinia virus) from cowpox lesions was used to inoculate humans, providing immunity against the more severe disease, smallpox.
Usage
- The veterinarian diagnosed the skin condition on the dairy herd as cowpox.
- The discovery that cowpox could protect against smallpox led to the practice of vaccination.
Advanced Usage
- Historical Context: The term is central to medical history. Edward Jenner's 1796 use of material from a cowpox sore to inoculate James Phipps demonstrated that cowpox conferred immunity to smallpox. This procedure was named "vaccination" from the Latin for cow.
- Scientific Context: In virology, cowpox virus is a member of the genus. While it can occasionally infect humans (a zoonosis), it is distinct from the variola virus that causes smallpox.
Variants and Related Words
- Vaccinia (noun): The virus used in the modern smallpox vaccine. While closely related and historically derived from cowpox, it is a distinct laboratory-grown virus.
- Vaccination (noun): The act of administering a vaccine to produce immunity, a term derived from cowpox.
Synonyms
- Vaccinia (in its historical/etymological context)
Notes on Meaning
- Primary Meaning: The specific disease affecting cattle.
- Historical/Procedural Meaning: The source material used for early immunization against smallpox. In this context, "cowpox" refers to the virus and the procedure itself.
Noun
-
a viral disease of cattle causing a mild skin disease affecting the udder; formerly used to inoculate humans against smallpox
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