"persistent corruption" is correct and can be used in written English.
It is typically used to describe a ongoing or continuous problem or situation of dishonesty or unethical behavior. Example: Despite numerous efforts to combat it, the country's government is still plagued by persistent corruption.
Mr. Giuliani cited problems with high turnover and "persistent corruption" in the agency.
Add in persistent corruption, export delays and terrible infrastructure, and Mongolia comes with sizable risks.
Mr. Lugo has accused Mr. Stroessner's Colorado Party of persistent corruption in the handling of Itaipú's finances.
Many, often contradictory, causes have been put forward: economic (unemployment and neo-liberal economic measures), political (persistent corruption and failure of education), cultural or ideological.
The report said Russia's emergence as a world power was "clouded" by persistent corruption and lagging investment in its critical energy industry.
Civic groups and others complain that such pardons help foster persistent corruption among the country's political and business elite by allowing the well connected to escape justice.
Are outsiders or insiders, Westerners or Arabs primarily responsible for the persistent poverty, corruption and repression?
Much of the violence is linked to the two separatist wars that ravaged Chechnya in the past 15 years, but persistent poverty, corruption, feuding ethnic groups and the rise of radical Islam are also factors.
The incoming president will face a litany of challenges, including threats of violence from emboldened Islamist terror group al Shabaab, persistent widespread corruption, and a fast-approaching famine.
The dedication of the reformers seems at least as persistent as the corruption.
That has led to persistent allegations of corruption and vote-buying by pro-whaling nations.
