Construct · 2 fields · 3 citations

Where does endemic collide?

One name. Different field. Different construct. One map.

● jingle · one word, two constructs Nearest construct by meaning·not indexed
endemic2 CONSTRUCTSEndemic diseaseANDERSON · ENDEMIC EQMEndemic speciesANDERSON · AREA & RANGE

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1991Endemic disease1994Endemic species
2026

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Epidemiology

A disease habitually present at a steady level

In epidemiology a disease is endemic when it is constantly present in a population at a more or less stable, expected baseline level, sustained by ongoing transmission rather than by introductions from outside. Mathematically it corresponds to the endemic equilibrium of a transmission model, the steady state at which new infections and recoveries balance so prevalence neither explodes into an epidemic nor dies out. Anderson and May's Infectious diseases of humans develops this endemic state and the conditions that hold it stable. The referent is a temporal pattern of persistent, roughly constant disease burden in a place, and it has nothing to do with a species being confined to one region beyond the shared meaning of belonging to a locale.[1][2]

Unit
The stable baseline incidence or prevalence sustained in a population
Recovery means
Not applicable
Measured by
Judged by persistent, roughly constant incidence or seroprevalence over time against an expected baseline

Biogeography

A taxon native to and restricted to one area

In biogeography a taxon is endemic when its entire natural range is confined to a single defined area, so that it occurs there and nowhere else, whether that area is an island, a mountain range, or a continent. Endemism is central to mapping biodiversity because narrow-range endemics concentrate in particular places and drive conservation priorities. Anderson's 1994 Area and endemism examines how range size and area shape measures of endemism. The referent is a spatial property of a species' distribution, a statement about where a taxon lives, and it is a wholly different construct from a disease being habitually present in a population.[3]

Unit
The geographic range to which a taxon is restricted
Recovery means
Not applicable
Measured by
Assessed by mapping a taxon's full distribution and confirming its range lies within one defined area

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Nearby collisions

balance4 fields · 5 citationsjingle · one word, four constructsbaseline2 fields · 2 citationsjingle · one word, two constructsbeing3 fields · 3 citationsjingle · one word, three constructs

References

  1. Anderson, R. M., & May, R. M. (1991). Infectious diseases of humans: Dynamics and control. Oxford University Press. ISBN 9780198540403
  2. Porta, M. (Ed.). (2014). A dictionary of epidemiology (6th ed.). Oxford University Press. ISBN 9780199976720
  3. Anderson, S. (1994). Area and endemism. The Quarterly Review of Biology, 69(4), 451–471. https://doi.org/10.1086/418743

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