"an emerging concern" is a correct and usable phrase in written English.
You can use it to refer to a new or growing problem, issue, or topic. For example: "Climate change is an emerging concern that must be addressed."
The increasing significance of non-degradable plastic wastes is an emerging concern.
The presence of pharmaceutical compounds in the environment has been considered an emerging concern.
Staphylococcus aureus (S. aureus) is an emerging concern in hospital settings as it causes serious human infections.
Time-dependent variability (reliability-related variability) is an emerging concern that needs to be considered in circuit design as well.
Transport and mobilization of sediments during flood events are an emerging concern as sediments are commonly recognized as both sources and sinks of pollutants in waterbodies.
There is an emerging concern among occupational health officials about the potential neurological effects associated with the exposure to manganese in welding fumes.
Inadvertent production of PCBs is an additional, emerging concern.
Large-scale environmental change may play an increasingly important role in ocean-public health links, and is thus a significant emerging concern.
"There's a real emerging concern about this in state DOTs because everything is becoming more connected," said Doug Couto, a cybersecurity and transportation consultant and former chief information officer for the Michigan transportation department.
A major emerging concern is bycatch in marine fisheries, which overlaps geographically with regions we found to be declining most precipitously (Bethoney et al. 2013; Cournane et al. 2013).
Antibiotic-resistant genes are an area of emerging concern to scientists because they impede the body's ability to fight disease.
