Polio eradication programme reaches 'major milestone'
The US Centres for Disease Control says it believes a major milestone has been reached in the battle to eliminate polio.
Experts think a second of the three forms of poliovirus has been eliminated after mass vaccination campaigns.
Wild poliovirus type 3 has not been detected for more than two years, and type 2 was eradicated in 1999.
Type 1 remains endemic in three countries - Pakistan, Afghanistan and Nigeria.
Anbarasan Ethirajan reports
15 Nov 2014
- From the section Health