Study to Assess the Food Effect on the Pharmacokinetics of Nifurtimox Tablets in Chronic Chagas' Patients

Inclusion Criteria: * Study participants of reproductive potential must agree to utilize two reliable and acceptable methods of contraception simultaneously when sexually active. One of these methods must include a barrier method. Subjects who are not of reproductive potential include: vasectomized males or non-vasectomized males with documented azospermia prior to screening, as well as females who are surgically sterilized with bilateral tubal ligation or who have undergone hysterectomy. Women who are menopausal are also considered not of reproductive potential if there has been no menses \> 12 months prior to screening and supported by a pre-screening follicle stimulating hormone (FSH) \> 40 mIU/ml if available. Examples of reliable and acceptable methods of birth control include, but are not limited to: diaphragm with spermicide, condoms with spermicide or oral contraception with condom use in the male partner. This applies from the signing of the informed consent up until 12 weeks after the last dose of the study medication. * Male/female subject diagnosed with chronic Chagas' disease: Previous diagnosis of acute or chronic Chagas' disease by a health clinic prior to screening for the study. The diagnosis of chronic Chagas' disease may be made by clinical findings, supported by antibody titers if available. If there is a known history of acute disease, it is preferable to have documentation of parasites on the blood smear if available * Age: 18 to 45 years (inclusive)…