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Prophylactic efficacy of Sm-p80–based vaccine. (A) Adult Schistosoma mansoni worm recovered per individual baboon in all four trials. (B) Egg burden per gram of tissue. (C) Weekly fecal egg per gram of feces. (D) Egg viability and hatching rate (n is the total number of eggs examined). Panels B, C and D depict cumulative data from all four trials.
