"a scourge on" is correct and usable in written English.
It is an idiomatic phrase meaning a cause of great suffering or harm. For example, "The pandemic has been a scourge on the economy."
It's a scourge on our society.
Barcelona's vice president greeted the news by declaring Mourinho a scourge on Spain.
They have been a scourge on the Uganda and that entire region, eastern Africa.
"Terrorism and appalling crimes such as these are a scourge on our world.
"I think they truly think drugs are a scourge on society," the diplomat said.
He added: "There is no doubt that carrier bags are a scourge on the environment.
But do critics who say they're a narcissistic scourge on society have a point?
For over a century, spotted knapweed has been a growing scourge on the North American landscape, spreading across millions of acres of prairies, hillsides, roadsides and rangeland -- pretty much anywhere it can get a root in the dirt.
"This was not only a problem of regulation on the mortgage front, but also a targeted scourge on minority communities," said Shaun Donovan, the secretary of Housing and Urban Development, in a speech this year at New York University.
More recently, LePage has been talking about the heroin crisis in Maine, saying that drug traffickers are a major scourge on the state -- particularly black drug dealers who allegedly "impregnate a young, white girl before they leave". .
"Fare dodgers are a parasitic scourge on this city costing London millions of pounds," said the mayor Boris Johnson when he announced a clampdown on cheats, with more plain-clothes ticket inspectors and police operations.
