MIC 301 Study Guide - Midterm Guide: Visceral Leishmaniasis, Cutaneous Leishmaniasis, Tsetse Fly
30 Mar 2016
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Occur among people in rural, undeveloped, or overcrowded places. Infecions involve several hosts: deiniive host: mature forms of parasites present and reproduce, intermediate host: immature forms undergo stages of maturaion. Infecion can occur thru ingesion, vector-borne transmission, or direct contact. Move and acquire food thru use of pseudopods. Invasive amebic dysentery severe diarrhea, coliis, appendiciis, ulceraion of intesinal mucosa. Amebic encephaliis (common) cause headache, altered mental state, neurological defects, and eventually death. Infecion occurs when swimmers inhale contaminated water invade nasal mucosa, may migrate to brain. Amebic meningoencephaliis may result cause hemorrhage, coma, and death: diagnosis trophozoites in clinical samples. Protozoa that posses at least one lagellum. # and arrangement of lagella determine species. Insect vector tsetse ly (glossina) a: acquired thru biten by infected tsetse lies while they"re feeding, tsetse ly has the mature tryptomasigotes within salivary gland c. Treatment: early pentamidine or suramin, cns infecions melarsoprol, untreated 100% fatal.
