One More Poliovirus Strain Now Eradicated

Nov 18, 2014

Image credit: RIBI Image Library

By Bahar Gholipour

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.

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