The phrase "and constant concern" is correct and usable in written English.
It can be used to express ongoing worry or anxiety about a particular issue or situation.
Example: "The safety of our employees is and constant concern for our management team."
Alternatives: "and ongoing worry" or "and perpetual anxiety".
No doubt he was an inspiring military leader who fired his army with religious fervour and whose personal intrepidity, imaginative tactics, and constant concern for his men evoked their love and loyalty.
The specter of threats to one's own safety, physical and mental, are a real and constant concern for gay and lesbian Americans and especially for gay and lesbian athletes.
As pleasurable as it may be to live with a Monet, a Picasso or a Warhol, there are also downsides: expensive insurance and constant concerns about security.
There are struggles over where a board should draw the line on when and to whom to rent, and constant concerns about a co-op's quality of life.
I couldn't wait to escape the old neighborhood with the crime and constant concerns about home invasions and muggings.
But as president of the United States, my highest loyalty, my greatest compassion, and my constant concern is for America's children, America's struggling workers, and America's forgotten communities.
With the expanding options for making cloud technology accessible and collaborative on a global scale, the challenge of securing data remains both a priority and a constant concern for companies.
They must be allowed to grow up and develop in an environment of care and respect, not constant concern and anxiety".
Delays and temporary shutdowns were rampant, and overcrowding a constant concern, as it remains today.
Shortages of food and of basic medical supplies made hunger and infection a constant concern.
Such a deity is generally thought to be constantly involved ('immanent') in the creation, ready to intervene as necessary, and without whose constant concern the creation would cease or disappear.
