TY - CHAP M1 - Book, Section TI - Protozoal and Algal Infections A1 - Burd, Eileen M. A1 - Westblade, Lars F. A1 - Hofman, Paul A2 - Barnhill, Raymond L. A2 - Crowson, A. Neil A2 - Magro, Cynthia M. A2 - Piepkorn, Michael W. A2 - Kutzner, Heinz A2 - Desman, Garrett T. PY - 2020 T2 - Barnhill's Dermatopathology, 4e AB - Protozoa are unicellular parasites that infect millions of people each year. Infections are often latent but may progress to active disease when the host-parasite balance shifts in favor of the parasite. Parasite burden (at initial infection or later), host immunity, and other factors influence this balance. International travel, extension of vector habitats, and increased numbers of immunocompromised hosts (patients undergoing chemotherapy, organ transplant recipients, HIV-infected individuals) have increased the pool of susceptible hosts. SN - PB - McGraw Hill Education CY - New York, NY Y2 - 2024/10/03 UR - dermatology.mhmedical.com/content.aspx?aid=1178394750 ER -