Many parasitic, tropical, and "orphan" diseases are infrequent in the developed world, the primary source of revenue for medicines manufacturers.
许多寄生虫病、热带病和“罕见”病在作为药品制造商主要收入来源的发达世界很少见。
2
Ten are for rare or “orphan” diseases, which frequently lack any therapy because of the small number of patients with the condition, such as a treatment for hereditary angioedema;
十种药是为罕见或“孤儿”病，因为患者少的情况经常缺乏任何治疗，例如遗传性血管水肿治疗。
3
This study thoroughly examines the following markets: orphandiseases, Gaucher's Disease and Pulmonary Arterial Hypertension (PAH) markets in Europe.