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Related Experiment Video

Updated: Feb 26, 2026

Single Droplet Digital Polymerase Chain Reaction for Comprehensive and Simultaneous Detection of Mutations in Hotspot Regions
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What is a Hotspot Anyway?

Justin Lessler1, Andrew S Azman1,2, Heather S McKay1

  • 1Department of Epidemiology, Johns Hopkins University, Baltimore, Maryland.

The American Journal of Tropical Medicine and Hygiene
|July 19, 2017
PubMed
Summary

Understanding infectious disease hotspots is key for effective control. This study clarifies the varied definitions of "hotspot" and proposes precise terms for better targeting of interventions.

Area of Science:

  • Epidemiology
  • Spatial Analysis
  • Public Health

Background:

  • Spatial clusters, or "hotspots," are increasingly recognized in infectious disease epidemiology.
  • Targeting hotspots is a common disease-control strategy.
  • The definition and scale of "hotspots" vary widely in research and policy.

Purpose of the Study:

  • To analyze the diverse meanings of "epidemiologic hotspots" in the literature.
  • To highlight the ambiguity in current hotspot terminology.
  • To advocate for more precise language in disease control.

Main Methods:

  • Literature review of epidemiologic hotspot research.
  • Analysis of the geographic scale and properties attributed to hotspots.
  • Identification of different types of hotspots based on their characteristics.

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Main Results:

  • The term "hotspot" is used inconsistently, referring to elevated incidence, prevalence, transmission risk, or emergence probability.
  • Significant variation exists in the spatiotemporal scales considered for hotspots.
  • Ambiguity in terminology can lead to ineffective intervention strategies.

Conclusions:

  • Precise terminology is crucial for clear communication and effective disease control.
  • Proposes specific terms like "burden hotspot," "transmission hotspot," and "emergence hotspot."
  • Emphasizes the need to specify the spatiotemporal scale of interest for accurate hotspot identification and intervention.