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About the Book

Masked Hero: The Story of Wu Lien-teh is a forthcoming book that tells the true story of a boy who loved science. When a deadly disease came to China in 1910, he used his learning, courage, and quick thinking to invent a mask — the first version of the N95 mask — that quickly ended the outbreak, saving countless lives in China and around the world.

Wu Lien-teh’s story teaches young readers that the simplest acts, such as wearing a mask, can save the lives of the people around you.