In 2009 the Committee on Economic Social and Cultural Rights issued a General Comment on non-discrimination in economic, social and cultural rights. The Committee’s interpretation is that States parties must immediately ‘adopt the necessary measures to prevent, diminish and eliminate the conditions and attitudes which cause or perpetuate substantive or de facto discrimination.’ The Committee adds that ‘the exercise of Covenant rights should not be conditional on, or determined by, a person’s current or former place of residence; e.g. whether an individual lives or is registered in an urban or a rural area, in a formal or an informal settlement, is internally displaced or leads a nomadic lifestyle. Disparities between localities and regions should be eliminated in practice by ensuring, for example, that there is even distribution in the availability and quality of primary, secondary and palliative health-care facilities.’ General Comment No. 20 on non-discrimination in economic, social and cultural rights.