Image:Toxoplasmosis LifeCycle.jpg

From Wikipedia, the free encyclopedia

This image was uploaded in the JPEG format even though it consists of non-photographic data. The information it contains could be stored more efficiently or more accurately in the PNG format or SVG format.
If possible, please upload a PNG or SVG version of this image, derived from a non-JPEG source so that it doesn't contain any compression artifacts (or with existing artifacts removed) and with transparency where appropriate. After doing so, please replace all instances of the JPEG version throughout Wikipedia (noted under the "File links" header), tag the JPEG version with {{obsolete|NewImage.ext}}, and remove this tag. For more information, see Wikipedia:Preparing images for upload.
This diagram image was uploaded in a raster image format such as PNG, GIF, or JPEG. However, it contains information that could be stored more efficiently and/or accurately in the SVG format, as a vector graphic.
If possible, please upload an SVG version of this image. After doing so, please replace all instances of the previous version throughout Wikipedia (noted under the “File links” header), tag the old version with {{Vector version available|NewImage.svg}}, and remove this tag. For more information, see Wikipedia:Preparing images for upload. For assistance with converting to SVG, please see the Graphics Lab.

[edit] Summary

Toxoplasma Life Cycle

Members of the cat family (Felidae) are the only known definitive hosts for the sexual stages of T. gondii and thus are the main reservoirs of infection. Cats become infected with T. gondii by carnivorism. After tissue cysts or oocysts are ingested by the cat, viable organisms are released and invade epithelial cells of the small intestine where they undergo an asexual followed by a sexual cycle and then form oocysts, which are excreted. The unsporulated oocyst takes 1 to 5 days after excretion to sporulate (become infective). Although cats shed oocysts for only 1 to 2 weeks, large numbers may be shed. Oocysts can survive in the environment for several months and are remarkably resistant to disinfectants, freezing, and drying, but are killed by heating to 70°C for 10 minutes.

Human infection may be acquired in several ways: A) ingestion of undercooked infected meat containing Toxoplasma cysts ; B) ingestion of the oocyst from fecally contaminated hands or food ; C) organ transplantation or blood transfusion; D) transplacental transmission; E) accidental inoculation of tachyzoites. The parasites form tissue cysts, most commonly in skeletal muscle, myocardium, and brain; these cysts may remain throughout the life of the host.

Source: CDC, http://www.dpd.cdc.gov/DPDx/HTML/ImageLibrary/Toxoplasmosis_il.asp?body=S-Z/Toxoplasmosis/body_Toxoplasmosis_il_th.htm

[edit] Licensing

Public domain This work is in the public domain in the United States because it is a work of the United States Federal Government under the terms of Title 17, Chapter 1, Section 105 of the US Code. See Copyright.
Note: This only applies to works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeDimensionsUserComment
current22:28, 13 October 2006435×571 (49 KB)Renice (Talk | contribs) (Toxoplasma Life Cycle<br><br> Members of the cat family (Felidae) are the only known definitive hosts for the sexual stages of T. gondii and thus are the main reservoirs of infection. Cats become infected with T. gondii by carnivorism. After tissue cyst)

The following pages on the English Wikipedia link to this file (pages on other projects are not listed):