Figure 82-3. Life cycle of T cruzi in the intestine of a triatomine bug and in the vertebrate host.

Figure 82-3Life cycle of T cruzi in the intestine of a triatomine bug and in the vertebrate host

After entering the bug in infected blood (A) the trypanosomes transform to epimastigotes in the stomach and midgut. B) Epimastigotes attach to the walls of the rectal sac and produce infective metacyclic trypomastigotes, which are eliminated with feces (C) and enter the vertebrate host through breaks in the skin. The parasites transform to amastigotes inside local cells (D), and multiply to release blood typanosomes, which invade other tissues (E & F).

From: Chapter 82, Hemoflagellates

Cover of Medical Microbiology
Medical Microbiology. 4th edition.
Baron S, editor.
Copyright © 1996, The University of Texas Medical Branch at Galveston.

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