Which factors are responsible for the increased spread of dengue?

Updated: May 03, 2019
  • Author: Darvin Scott Smith, MD, MSc, DTM&H; Chief Editor: Michael Stuart Bronze, MD  more...
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Factors believed to be responsible for the spread of dengue include the following:

  • Explosive population growth
  • Unplanned urban overpopulation with inadequate public health systems
  • Poor control of standing water and vectors
  • Viral evolution
  • Increased international recreational, business, and military travel to endemic areas

All of these factors must be addressed to control the spread of dengue and other mosquito-borne infections. Unplanned urbanization is believed to have had the largest impact on disease amplification in individual countries, whereas travel is believed to have had the largest impact on global spread. [6, 8, 9, 12, 15]

Liu-Helmersson et al (2016) found that, over time, the duration and intensity of dengue transmission in Europe have increased. With increasing levels of greenhouse gas emissions, the authors predict that changes in intensity and duration will occur more rapidly. [16]

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