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Defining core gonorrhea transmission utilizing spatial data.

Kyle T Bernstein1, Frank C Curriero, Jacky M Jennings

  • 1Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA. kbernste@jhsph.edu

American Journal of Epidemiology
|July 2, 2004
PubMed
Summary
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Repeat gonorrhea infections are common in Baltimore and indicate high-risk sexual behaviors. Identifying these core transmission areas using repeat infections can help target public health interventions more effectively.

Area of Science:

  • Public Health
  • Epidemiology
  • Infectious Disease Control

Background:

  • Gonorrhea remains a significant public health concern, necessitating effective strategies for control.
  • Understanding the spatial distribution of infections is crucial for identifying high-risk populations and transmission hotspots.

Purpose of the Study:

  • To examine the spatial distribution of repeat and singly occurring gonorrhea cases in Baltimore, Maryland.
  • To identify clusters of core transmitters using different definitions of core transmission.
  • To assess the agreement between definitions based on overall disease burden versus repeat infections.

Main Methods:

  • Geocoding and mapping of gonorrhea cases reported between 2001 and 2002.
  • Defining 'repeaters' as individuals with more than one gonorrhea infection separated by >14 days.

Related Experiment Videos

  • Analyzing six definitions of core transmission based on case counts, rates, repeater counts, and repeater proportions within census tracts.

    • Main Results:

    • Of 6,108 gonorrhea cases, 9% were repeaters, who were more likely to be female and younger.
    • Core areas identified by overall disease burden showed good agreement, but poor agreement with definitions based on repeat infections.
    • Repeat gonorrhea infections clustered more significantly at smaller distances compared to singly occurring cases.

    Conclusions:

    • Repeat gonorrhea infections are prevalent in Baltimore and suggest behaviors consistent with core transmission.
    • Census tracts identified by the geographic distribution of repeat infections may pinpoint areas of highest risk sexual behaviors and transmission.
    • Targeting interventions based on repeat infection clusters could enhance the effectiveness of gonorrhea control efforts.