"As with any new emerging variants, we are looking into B.1.1.529 to understand more about it and the impact on the vaccine," AstraZeneca said in a statement, adding it was conducting research in Botswana and Eswatini to collect data.

"We are also testing our long-acting antibody combination AZD7442 against this new variant and are hopeful AZD7442 will retain efficacy since it comprises two potent antibodies with different and complementary activities against the virus."

(Reporting by Alistair Smout; Editing by Kevin Liffey)