Wednesday, April 14, 2010

New parasitic news

BBC News - Parasite 'a growing stroke risk'

Just what we need: news of a parasite that I haven't heard of before that is gaining global popularity:

Some 18m people worldwide have Chagas disease, caused by an infection with the parasite Trypanosoma cruzi.

Recently, researchers discovered having this disease puts the individual at increased risk of stroke due to heart complications and blood clots.

Chagas disease is endemic in Latin America. But emigration of millions of people to Europe, North America, Japan and Australia over the past 20 years has also made Chagas disease an emerging health problem in these countries with the potential to cause a substantial disease burden, say the investigators.
They don't actually explain what bugs can give you the disease, apart from having a photo of some unnamed blood sucker. Wikipedia explains that it is usually via a bug with particularly unpleasant habits:
In Chagas-endemic areas, the main mode of transmission is through an insect vector called a triatomine bug.[1] A triatomine becomes infected with T. cruzi by feeding on the blood of an infected person or animal. During the day, triatomines hide in crevices in the walls and roofs. The bugs emerge at night, when the inhabitants are sleeping. Because they tend to feed on people’s faces, triatomine bugs are also known as “kissing bugs.” After they bite and ingest blood, they defecate on the person. Triatomines pass T. cruzi parasites (called trypomastigotes) in feces left near the site of the bite wound. Scratching the site of the bite causes the trypomastigotes to enter the host through the wound, or through intact mucous membranes, such as the conjunctiva.
Yuck.

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