Second Polio Strain Possibly Eradicated, What's Next?
It's been two years since any new cases of poliovirus type 3 have been reported, meaning it could be eradicated.By Jasmine Bailey | November 17, 2014
In what researchers are calling a "historic milestone," poliovirus type 3 might be completely eradicated — there have been no new reports of the strain in two years.
According to the Centers for Disease Control and Prevention, if a strain of polio has not been seen worldwide in three or more years, it can then be considered eradicated. This month brought the two-year mark.
A quick clarification — there are three known strains of the poliovirus: types 1, 2 and 3.