Critics say such patents block progress against disease and development of new treatments.

VOA: special.2010.03.23

The problem is you've got to make hundreds of millions of doses sometimes in order to have an effect on progress of the disease.

问题是有时候你不得不去制造几亿支疫苗,以便在疾病进展时发挥作用

耶鲁公开课 - 生物医学工程探索课程节选

They predicted progress against genetic diseases like cystic fibrosis and Parkinson's disease.

VOA: special.2010.07.20