A new polio vaccine joins the fight to vanquish the paralyzing disease
The modified vaccine seeks to end outbreaks in the Middle East and Africa
A baby is vaccinated against polio in Mauritania in 2020. Vaccination campaigns have provided more than 10 billion doses of oral polio vaccine to nearly 3 billion children since 2000, preventing more than 13 million cases of polio, according to the World Health Organization.
Raphael Pouget/UNICEF