Home Global Health News A milestone for humanity: Two strains of polio are now eradicated

A milestone for humanity: Two strains of polio are now eradicated

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A milestone for humanity: Two strains of polio are now eradicated

Global eradication of wild poliovirus type 3 declared on World Polio Day

24 October 2019 (WHO)
In an historic announcement on World Polio Day, an independent commission of experts concluded that wild poliovirus type 3 (WPV3) has been eradicated worldwide. Following the eradication of smallpox and wild poliovirus type 2, this news represents a historic achievement for humanity.
“The achievement of polio eradication will be a milestone for global health. Commitment from partners and countries, coupled with innovation, means of the three wild polio serotypes, only type one remains,” said Dr Tedros Adhanom Ghebreyesus, Director-General of the World Health Organization and Chair of the Global Polio Eradication Initiative (GPEI) Polio Oversight Board “We remain fully committed to ensuring that all necessary resources are made available to eradicate all poliovirus strains. We urge all our other stakeholders and partners to also stay the course until final success is achieved,” he added.

There are three individual and immunologically-distinct wild poliovirus strains: wild poliovirus type 1 (WPV1), wild poliovirus type 2 (WPV2) and wild poliovirus type 3 (WPV3). Symptomatically, all three strains are identical, in that they cause irreversible paralysis or even death. But there are genetic and virologic differences which make these three strains three separate viruses that must each be eradicated individually.

Related: Global Commission for Certification of Poliomyelitis Eradication (GCC) meet in Geneva to review criteria for certification

WPV3 is the second strain of the poliovirus to be wiped out, following the certification of the eradication of WPV2 in 2015. The last case of WPV3 was detected in northern Nigeria in 2012. Since then, the strength and reach of the eradication programme’s global surveillance system has been critical to verify that this strain is truly gone. Investments in skilled workers, innovative tools and a global network of laboratories have helped determine that no WPV3 exists anywhere in the world, apart from specimens locked in secure containment.

A milestone for humanity Two strains of polio are now eradicated 2019

A milestone for humanity- Two strains of polio are now eradicated_2019

Official Certificate received by Dr. Tedros, Director-General of the World Health Organization

Official Certificate received by Dr. Tedros, Director-General of the World Health Organization

At a celebration event at the headquarters of the World Health Organization in Geneva, Switzerland, Professor David Salisbury, chair of the independent Global Commission for the Certification of Poliomyelitis Eradication, presented the official certificate of WPV3 eradication to Dr Adhanom Ghebreyesus. “Wild poliovirus type 3 is globally eradicated,” said Professor Salisbury. “This this is a significant achievement that should reinvigorate the eradication process and provides motivation for the final step – the eradication of wild poliovirus type 1. This virus remains in circulation in just two countries: Afghanistan and Pakistan. We cannot stop our efforts now: we must eradicate all remaining strains of all polioviruses.  We do have good news from Africa:  no wild poliovirus type 1 has been detected anywhere on the continent since 2016 in the face of ever improving surveillance.  Although the region is affected by circulating vaccine-derived polioviruses, which must urgently be stopped, it does appear as if the continent is free of all wild polioviruses, a tremendous achievement.”

Related: 27th March 2014 : Historical Day in field of Public Health to end Polio in Nepal

Eradicating WPV3 proves that a polio-free world is achievable.

Key to success will be the ongoing commitment of the international development community.  To this effect, as part of a Global Health Week in Abu Dhabi, United Arab Emirates, in November 2019, the Reaching the Last Mile Forum will focus international attention on eradication of the world’s deadliest diseases and provide an opportunity for world leaders and civil society organizations, notably Rotary International which is at the origin of this effort, to contribute to the last mile of polio eradication.

Fractional Dose of Inactivated Polio Vaccine-fIPV

The GPEI 2019–2023 Investment Case lays out the impact of investing in polio eradication.  The polio eradication efforts have saved the world more than US$27 billion in health costs since 1988.A sustained polio-free world will generate further US$14 billion in savings by 2050, compared to the cost countries would incur for controlling the virus indefinitely.

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