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Gr 4-6 Some of the smallest and most dangerous of human parasites are examined in these lucid introductions. Bueche discusses the nature of viruses in general and Ebola in particular, the pathogen's usually deadly method of attack, ways to prevent the spread of this highly contagious disease, and current efforts to develop a vaccine. In Lice and Chiggers, several short chapters briefly describe the distinctive physical and behavioral characteristics of their respective arthropods and special cha...Log In or Sign Up to Read More