Polio, a deadly disease that used to paralyze tens of thousands of children every year, is spreading in London, New York and Jerusalem for the first time in decades, spurring catch-up vaccination campaigns.
DREADED DISEASE
Polio terrified parents around the world for the first half of the 20th century. Affecting mainly children under five, it is often asymptomatic but can also cause symptoms including fever and vomiting. Around one in 200 infections leads to irreversible paralysis, and among those patients, up to 10% die.
