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World's largest blind symbol unveiled in Vienna

The world's largest blind symbol -- a yellow banner with three black spots -- was unveiled Thursday at Vienna's St. Stephen's cathedral on the occasion of World Sight Day.

Diseases, Conditions, Syndromes

Nigeria parents risk jail for skipping polio drops

(AP) -- Parents who do not allow their children to be vaccinated against polio now risk jail time for defying a government order aimed at ensuring that the disease is eradicated from Africa's most populous nation, authorities ...

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