The phrase "a persistent concern of" is correct and usable in written English.
It can be used to indicate an ongoing issue or worry that affects a particular group, individual, or situation.
Example: "Climate change has become a persistent concern of environmental activists around the world."
Alternatives: "an ongoing issue for" or "a continual worry of".
The United States trade deficit has been a persistent concern for years, of course.
A persistent concern about the use of computers and especially computer games is that this could result in anti-social behavior and isolation.
Although ascertainment bias is a persistent concern in the use of IID surveillance data, this paper has demonstrated methods through which the severity of this can be explored.
"Sudden deaths of entire honey bee colonies is a persistent concern in North America," said Paul de Zylva, Friends of the Earth's senior nature campaigner.
Mental health problems are a persistent concern – particularly widespread are incidences of depression, anxiety and post traumatic stress disorder.
Although the revived à la carte legislation has an uphill battle to passage, it underscores a persistent concern with the rising costs of ESPN and other sports networks.
That mostly is their track record, but their Achilles' heel is their perceived lack of transparency and a persistent concern that they will be motivated by more than just market considerations, which provides ammunition for the conspiracy theorists among their critics and feeds the forces of protectionism stirring in this U.S. presidential election year.
There has been a persistent concern in obstetrics about the increasing rate of primary cesarean section.
The law's provisions "are still quite general and do not address a number of the persistent concerns of foreign companies or foreign-invested enterprises in China," said Timothy P. Stratford, chairman of the American Chamber of Commerce in China and the managing partner of the Beijing office of the Covington and Burling law firm.
But it said some provisions were "still quite general and do not address a number of the persistent concerns of foreign companies or foreign-invested enterprises in China".
