The phrase "cause serious concern" is correct and usable in written English.
You can use this phrase to describe when a problem has arisen that requires special attention. For example: "The rise in unemployment numbers has caused serious concern amongst policy makers."
There are 1,466 glacial lakes in Nepal, with 21 big enough to cause serious concern.
This unfortunate case highlights the dangers to children in the digital world, which cause serious concern to parents, teachers and regulators as well as technology developers and vendors.
The upsurge in Shia identity and confidence seen here would certainly cause serious concern in the Salafi-jihadist community in the Muslim world, including the senior leadership of al-Qaeda.
Such cultural differences can cause serious concern for effective risk management.
Because of the widespread use of these compounds, especially in the United States, where concentrations in the environment are four times higher than in Europe, these results cause serious concern.
The Australian trade minister, Mark Vaile, above, said the proposals cause serious concerns, primarily because they lack specific figures.
You think: 'Oh my God, these people were offending almost in open sight and no one thought to intervene.'" Liz Dux, a lawyer representing 74 of Savile's victims, said Smith had been forensic in her examination of witnesses and her report was likely to cause serious concerns for those at the top of the organisation.
The Foreign Ministry in Moscow issued a statement saying the missile firing "causes serious concern".
The mosquito-borne virus that has spread across many countries in South and Central America has caused serious concern in Brazil.
"Teachers will complain about practically anything, but I can't remember the windows ever causing serious concern".
The successful 2012 satellite launch caused serious concern but experts stressed that it lacked the re-entry technology needed to bring an ICBM down on to a target.
