Journal article

Measuring polio immunity to plan immunization activities

The Global Polio Eradication Initiative is closer than ever to achieving a polio-free world. Immunization activities must still be carried out in non-endemic countries to maintain population immunity at levels which will stop poliovirus from spreading if it is re-introduced from still-infected areas. In areas where there is no active transmission of poliovirus, programs must rely on surrogate indicators of population immunity to determine the appropriate immunization activities, typically caregiver-reported vaccination history obtained from non-polio acute flaccid paralysis patients identified through polio surveillance. We used regression models to examine the relationship between polio vaccination campaigns and caregiver-reported polio vaccination history. We find that in many countries, vaccination campaigns have a surprisingly weak impact on these commonly used indicators. We conclude that alternative criteria and data, such as routine immunization indicators from vaccination records or household surveys,

Languages

  • English

Publication year

2016

Journal

Vaccine

Volume

48

Type

Journal article

Categories

  • Data

Diseases

  • Polio

Countries

  • Afghanistan
  • Nigeria
  • Pakistan

Tags

  • Coverage monitoring
  • Data quality
  • Data reporting

WHO Regions

  • African Region
  • Eastern Mediterranean Region

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