DUBAI- Mid-market airlines are the most vulnerable in the current environment as carriers struggle to contain the financial impact of the coronavirus, a senior analyst at aviation data firm OAG said on Thursday.

"There will be casualties ... what I would term the mid-market airlines," John Grant said in an online briefing.

"Those who are not operating in a niche environment with public service obligations or other such structures, or are not of scale and mass are, I think, those that will be most vulnerable."

(Reporting by Alexander Cornwell; Editing by Jan Harvey) ((Alexander.Cornwell@thomsonreuters.com;))