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The future of polio eradication.

H F Hull1

  • 1Minnesota Department of Health, Minneapolis 55414, USA. harry.hull@state.mn.us

The Lancet. Infectious Diseases
|March 2, 2002
PubMed
Summary

Global polio eradication faces challenges in persistent transmission zones and conflict areas. Continued high immunization coverage and robust surveillance are crucial until eradication is certified and a post-immunization strategy is defined.

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Area of Science:

  • Public Health
  • Infectious Disease Epidemiology
  • Vaccinology

Background:

  • The global initiative to eradicate wild poliovirus is nearing its objective.
  • Significant obstacles persist, including low-level transmission in endemic countries, high-density populations, and conflict zones.

Purpose of the Study:

  • To outline the remaining challenges in achieving global polio eradication.
  • To emphasize the necessity of sustained efforts, resource mobilization, and high-quality surveillance.
  • To highlight the need for a defined strategy for discontinuing immunization post-eradication.

Main Methods:

  • Review of the current status of the global polio eradication initiative.
  • Analysis of challenges in polio-endemic and high-risk countries.
  • Discussion of surveillance requirements and post-eradication immunization strategies.

Main Results:

  • Wild poliovirus transmission must be terminated in specific challenging regions.
  • High-quality surveillance is essential in all countries until eradication is certified.
  • A strategy for stopping immunization after eradication needs development to address potential risks.

Conclusions:

  • Achieving polio eradication requires persistent effort, resource mobilization, and high immunization coverage.
  • Robust surveillance systems are critical in remaining endemic areas, particularly in Africa.
  • A clear strategy is needed to manage risks like feral or vaccine-derived polioviruses post-eradication.

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