SYDNEY, Nov 30 (Reuters) - The head of drugmaker Moderna said COVID-19 vaccines are unlikely to be as effective against the Omicron variant of the coronavirus as they have been against the Delta variant.

"There is no world, I think, where (the effectiveness) is the same level... we had with Delta," Moderna Chief Executive Stéphane Bancel told the Financial Times https://www.ft.com/content/27def1b9-b9c8-47a5-8e06-72e432e0838f in an interview.

"I think it's going to be a material drop. I just don't know how much because we need to wait for the data. But all the scientists Ive talked to... are like 'this is not going to be good'."

(Reporting by Tom Westbrook; Editing by Kim Coghill)