MANILA — The Global Commission for the Certification of the Eradication of Poliomyelitis is expected to announce a major milestone this week: the global eradication of wild poliovirus type 3.
The announcement will mean there’s only one wild poliovirus still in circulation — type 1, in Afghanistan and Pakistan — considered the last frontiers of the fight against the disease.
But several countries’ weak health systems and the scourge of vaccine skepticism worldwide are posing challenges to polio eradication efforts.