Polio Is Closer To Being Eliminated Completely Than Ever Before

The World Health Organization reports that two of the three polio strains have been eradicated globally, with type 3 last seen in Nigeria in 2012 and type 2 eradicated in 2015. Only type 1 remains active, primarily in Afghanistan and Pakistan. Despite progress, challenges such as vaccine misinformation and insecurity hinder complete eradication. Specimens of eradicated strains are securely contained.

What are the three different strains of polio mentioned in the text?

What year was wild poliovirus type 3 last recorded?

What major hurdles are mentioned that hinder the total eradication of polio?

In which countries is the polio virus still present?

What factors have hindered the eradication of polio in Afghanistan and Pakistan?