One More Poliovirus Strain Likely Eradicated Worldwide

By: Bahar Gholipour
Published: 11/13/2014 01:36 PM EST on LiveScience

One strain of the virus that causes polio has likely been eradicated worldwide, according to a new report.

For two years now, there have been no new reports of polio caused by this strain, called poliovirus type 3, according to researchers from World Health Organization (WHO) and Centers for Disease Control and Prevention (CDC).

The possible eradication of the poliovirus type 3 would be a “historic milestone” for global polio eradication efforts, the researchers said in their report released today (Nov. 13).

The world is not yet rid of polio. There are three strains of the virus, and type 1 is still actively being transmitted in three countries: Nigeria, Pakistan and Afghanistan. Transmission of poliovirus type 2 has been stopped since 1999. [5 Scariest Disease Outbreaks of the Past Century]

Poliovirus causes polio, or poliomyelitis, as the condition is properly called. The disease is a highly contagious and incurable infection of the nervous system, but can be prevented by vaccination. In the 1980s, the virus killed or paralyzed about 350,000 people worldwide each year. But since the WHO’s Global Polio Eradication Initiative was —> Read More Here


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