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Authors: Sateriale, Adam and Šlapeta, Jan and Baptista, Rodrigo and Engiles, Julie B and Gullicksrud, Jodi A and Herbert, Gillian T and Brooks, Carrie F and Kugler, Emily M and Kissinger, Jessica C and Hunter, Christopher A and Striepen, Boris

Cryptosporidium is a leading cause of diarrheal disease and an important contributor to early childhood mortality, malnutrition, and growth faltering. Older children in high endemicity regions appear resistant to infection, while previously unexposed adults remain susceptible. Experimental studies in humans and animals support the development of disease resistance, but we do not understand the mechanisms that underlie protective immunity to Cryptosporidium. Here, we derive an in vivo model of Cryptosporidium infection in immunocompetent C57BL/6 mice by isolating parasites from naturally infected wild mice. Similar to human cryptosporidiosis, this infection causes intestinal pathology, and interferon-? controls early infection while T cells are critical for clearance. Importantly, mice that controlled a live infection were resistant to secondary challenge and vaccination with attenuated parasites provided protection equal to live infection. Both parasite and host are genetically tractable and this in vivo model will facilitate mechanistic investigation and rational vaccine design.Copyright © 2019 The Authors. Published by Elsevier Inc. All rights reserved.

Journal: Cell host & microbe
DOI: 10.1016/j.chom.2019.05.006
Year: 2019

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