NEW DELHI- India's Bharat Biotech said on Wednesday a booster shot of its Covaxin COVID-19 vaccine administered six months after the last of two doses neutralises both the Omicron and Delta variants of the coronavirus.

"The neutralisation activity of Covaxin-boosted sera was comparable to what has been observed in mRNA vaccine-boosted sera against the Omicron variant," it said in a statement.

"More than 90% of all individuals boosted with Covaxin showed neutralizing antibodies."

(Reporting by Krishna N. Das, Editing by Louise Heavens) ((Krishna.Das@tr.com; https://twitter.com/krishnadas56 ;))