
Scientists won the battle against smallpox. Uncover the symptoms behind smallpox, how a vaccine stopped the spread, and why scientists still research the disease.
Dive deep into the Deadly Diseases series--part of the UpDog Books(TM) collection. Discover what causes these illnesses, the symptoms behind them, and what is being done to stop the spread. At the end of the book, read two patients' symptoms and decide which one has the sickness.
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