The phrase "a very concerned" is correct and usable in written English.
It can be used when expressing a strong feeling of worry or anxiety about a particular issue or situation.
Example: "After hearing the news, I became a very concerned parent, wanting to ensure my child's safety."
Alternatives: "extremely worried" or "deeply troubled".
White House officials acknowledge failures in the initial response and said a "very concerned" Obama had cancelled travel plans and convened an urgent meeting with cabinet members on Wednesday to make sure federal agencies were properly coordinated.
"A very concerned American Male, am I!" is how the author concluded his note, although it is unclear whether his concern was enough for him to take out a subscription.
"He was a very concerned man, with a hands-on approach," Monsignor Brucato said.
As a very concerned 10th grader in Hewlett High School, I am writing to thank you for "The Modern Student: Batteries Not Included" (Aug. 10).
"I told him I was only 16 – looking older than my years undoubtedly, made up and all – and he took on a very concerned demeanour," she writes.
Shortly after takeoff, however, something went wrong: the cabin filled with smoke, the temperature inside the plane plunged, and a very concerned flight attendant ordered all passengers to the back of the aircraft.
"We appreciate that this is a very concerning time for the employees, customers and suppliers of Newcastle Productions and will keep all concerned informed of significant updates".
"This is a very concerning development but not, frankly, out of pattern for the North lately," Mr. Morrell said on MSNBC's "Daily Rundown".
"Usually, a blood clot in this area would be a very concerning issue," said Dr. Nrupen Baxi, an assistant professor of neurosurgery at the Albert Einstein College of Medicine in New York City.
"We now have a very concerning environment in both locations that in all fronts do not look sustainable when it comes to people movement across our region".
