(NEWSER) – A little-known parasitic disease from Latin America costs the US economy $900 million a year, theNew York Times reports, even though you've probably never heard of Chagas disease. To put the figure in perspective, the much more publicized Lyme disease costs the US about $2.5 billion, a study reported. And worldwide, Chagas costs some $7 billion—more than cervical cancer or cholera. Chagas, spread by the "kissing bug," is widespread between Mexico and Argentina, and the bugs have appeared in the southern US. As NPRnotes, about 300,000 Americans carry the bug; most are Texans.