OPV

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Definition

Noun: - An oral vaccine containing live but weakened poliovirus, administered to provide immunity against poliomyelitis (polio). This term is an acronym for "Oral Polio Vaccine."

Usage

The term "OPV" is used primarily in medical, public health, and vaccination contexts. It refers specifically to the type of polio vaccine given as oral drops, as opposed to the inactivated polio vaccine (IPV), which is injected.

Examples
  • The global eradication effort relies heavily on the widespread distribution of OPV.
  • Children in many countries receive their first dose of OPV shortly after birth.
  • The switch from trivalent to bivalent OPV was a key strategic step in eliminating the virus.
Advanced Usage
  • OPV is often discussed in contrast to IPV (Inactivated Polio Vaccine). For example: "While IPV is safer for individuals with compromised immune systems, OPV is more effective at preventing the spread of wild poliovirus in communities."
  • In epidemiological reporting, you might see: "A cVDPV (circulating vaccine-derived poliovirus) outbreak was linked to the use of type 2 OPV."
Variants and Related Words
  • Oral Polio Vaccine: The full form of the acronym OPV.
  • Sabin vaccine: A common synonym, named after its developer, Albert Sabin.
  • bOPV (bivalent Oral Polio Vaccine): A formulation protecting against poliovirus types 1 and 3.
  • tOPV (trivalent Oral Polio Vaccine): The original formulation protecting against all three types (1, 2, and 3) of wild poliovirus.
  • mOPV (monovalent Oral Polio Vaccine): A formulation targeting a single poliovirus type (e.g., mOPV1, mOPV2).
Synonyms
  • Oral polio vaccine
  • Sabin vaccine
  • Live attenuated oral polio vaccine
Related Phrases
  • OPV campaign: A coordinated public health effort to vaccinate a population with OPV, often in a short period.
    • The successful OPV campaign helped stop the outbreak.
  • OPV-derived virus: Refers to a poliovirus strain that has genetically changed from the weakened strain in the vaccine and can, in rare cases, cause paralysis or circulate.
    • Surveillance is crucial to detect any OPV-derived viruses.
Notes

"OPV" is a technical acronym. In general writing, it is often introduced by its full name first (e.g., "the oral polio vaccine (OPV)"). It is typically not used in idiomatic expressions or phrasal verbs.

Noun
  1. an oral vaccine (containing live but weakened poliovirus) that is given to provide immunity to poliomyelitis

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