In May 1993, a cluster of cases of a lethal disease among healthy young people brought the attention of the world to the southwestern deserts. A previously unknown disease was killing up to 80% of the people it infected. The reaction in the area and across the nation mixed fear, lack of information, and the struggles of doctors to save the victims of an unknown killer with hard science and the age old rhythmns of the desert. What came out was the story of a virus that had been killing since man arrived in the American continents, Hantavirus, with deadly relatives across the Americas and across the world. This book explains why and how the virus kills, and why it is still killing today. Why all of the science aimed at a virus identified back in 1993 has not brought a vaccine or a cure is part of the story, as is how that killer virus fits into the story of "new" diseases across the world. The story of hantavirus disease, what has happened since that first outbreak, and what the real risks are is laid out by an experienced scientist and an award winning journalist living and working in the area of the 1993 outbreak.