Paraguay 2012 © Anna Surinyach/MSF
Chagas is an infectious disease caused by the Trypanosoma cruzi parasite. Endemic in several Latin American countries, it is most often transmitted through the so-called vinchuca, a bug that is infected with the parasite. Approximately 30 percent of people who contract Chagas disease will develop potentially fatal heart lesions, and another 10 percent suffer irreversible and potentially fatal gastrointestinal damage.