RT Book, Section A1 Hilal-Dandan, Randa A1 Brunton, Laurence L. SR Print(0) ID 1127553273 T1 Chemotherapy of Protozoal Infections: Amebiasis, Giardiasis, Trichomoniasis, Trypanosomiasis, Leishmaniasis, and Other Protozoal Infections T2 Goodman and Gilman's Manual of Pharmacology and Therapeutics, 2e YR 2016 FD 2016 PB McGraw-Hill Education PP New York, NY SN 9780071769174 LK accessbiomedicalscience.mhmedical.com/content.aspx?aid=1127553273 RD 2024/10/09 AB Humans host a wide variety of protozoal parasites that can be transmitted by insect vectors, directly from other mammalian reservoirs or from one person to another. The immune system plays a crucial role in protecting against the pathological consequences of protozoal infections. Thus, opportunistic infections with protozoa are prominent in infants, individuals with cancer, transplant recipients, those receiving immunosuppressive drugs or extensive antibiotic therapy, and persons with advanced human immunodeficiency virus (HIV) infection. Because effective vaccines are unavailable, chemotherapy has been the only practical way to both treat infected individuals and reduce transmission. Many effective antiprotozoal drugs are toxic at therapeutic doses, a problem exacerbated by increasing drug resistance.