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Posted 20 Nov 2024

2 min read

In March 2014, the World Health Organization declared India polio-free based on criteria including three years of no wild poliovirus transmission, robust surveillance systems, and the destruction of any remaining stocks of the virus.

  • It involved culmination of decades of dedicated efforts, starting with India’s participation in the Global Polio Eradication Initiative and national immunization efforts under Universal Immunization Programme (UIP).

About Universal Immunization Programme 

  • It is one of the world’s largest public health programs providing free vaccines for 12 vaccine-preventable diseases.
  • In 1985, Expanded Programme on Immunization was renamed as UIP, broadening its reach to rural areas beyond urban centers.

Preventive measures to maintain Polio-free status in India

  • Annual Polio Campaigns: National Immunization Days (NID) and Sub-National Immunization Days (SNID) conducted annually to keep immunity levels high and ensure that no child is missed.
  • Surveillance and Border Vaccination: Vaccination at international borders continues to mitigate the risk of polio re-importation from endemic regions.
  • Inactivated Polio Vaccine (IPV): Introduced in 2015, provides additional protection against polio, especially against type 2 poliovirus.
  • Mission Indradhanush: Launched in 2014, it aims to increase immunization coverage to 90%. Special attention is given to hard-to-reach areas with low immunization rates. 

About Poliomyelitis (Polio)

  • Highly infectious viral disease that largely affects children under 5 years of age.
  • Transmission: Person-to-person spread mainly through the faecal-oral route or, 
    • less frequently, by a common vehicle (e.g., contaminated water or food) and multiplies in the intestine, from where it can invade the nervous system and cause paralysis.
  • Wild Poliovirus Strain Status across the World
    • Type 1: Remains endemic in Pakistan and Afghanistan (as of 2022).
    • Type 2: Eradicated in 1999
    • Type 3: Eradicated in 2020
  • Vaccine-derived polio occurs when the weakened strain in oral polio vaccine (OPV) mutates, potentially regaining the ability to cause paralysis in under-vaccinated populations.
  • Tags :
  • Polio
  • Universal Immunization Programme
  • Global Polio Eradication Initiative
  • Inactivated Polio Vaccine
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