"wave of concern" is a correct and usable phrase in written English.
You can use it to describe a widespread feeling of worry or alarm about something. For example, "The increasing rate of unemployment has sparked a wave of concern among the public."
A wave of concern swept the room.
A fresh wave of concern exists about the safety of on-road cycling".
The later 19th century saw a new wave of concern about health and hygiene.
Last week, there was a fresh wave of concern after the September Puzzler was a few days late going online.
Problems with hospice care reflect a growing wave of concern about scams that abuse or bilk the elderly.
Still, it caused a wave of concern over imported raw milk cheeses that many cheese fanciers feared would be banned.
But he added that the lists had stirred a fresh wave of concerns among officials.
Charities have been hit by a wave of concerns about what they do and why, and charity leaders must consider their responses carefully.
Beverly's stock, which topped $12 a year ago before a fresh wave of concerns over reimbursement levels, is now trading at $7.30.
All along, the state's involvement — including Mr. Snyder's decision to send in an emergency manager — has carried racial implications, setting off a wave of concerns for some in Detroit that the mostly white Republican-led state government was trying to seize control of Detroit, a Democratic city where more than 80 percent of residents are black.
They suggest that the coldest March for 50 years, which hit the numbers published in April 2013 and led to a fresh wave of concerns about the direct pledge to increase the number of people playing sport through the Games, has not dented participation figures in the longer term.
