Book excerpt: “Extremely interesting . . . Young people interested in medicine or scientific discovery will find this book engrossing, as will history students” (School Library Journal). [He had] a fever that hovered around 104 degrees. His skin turned yellow. The whites of his eyes looked like lemons. Nauseated, he gagged and threw up again and again . . . Here is the true story of how four Americans and one Cuban tracked down a killer, one of the word’s most vicious plagues: yellow fever. Journeying to fever-stricken Cuba in the company of Walter Reed and his colleagues, the reader feels the heavy air, smells the stench of disease, hears the whine of mosquitoes biting human volunteers during surreal experiments. Exploring themes of courage, cooperation, and the ethics of human experimentation, this gripping account is ultimately a story of the triumph of science. “[A] powerful exploration of a disease that killed 100,000 U.S. citizens in the 1800s.” —Kirkus Reviews Includes photos