Photo used for illustrative purpose.
AstraZeneca also revealed in other findings that its preventative moniclonal antibody treatment, Evusheld, "retains neutralisation activity" against Omicron.
The threat of the highly transmissible Omicron variant looms large over the festive holidays, forcing many governments to roll out new curbs and urge citizens to get vaccinated.
"Vaxzevria significantly boosted levels of antibodies against the Omicron SARS-CoV-2 variant (B.1.1.529) following a third dose booster," AstraZeneca said in a statement.
"The third dose booster vaccination neutralised the Omicron variant to levels that were broadly similar to those observed... after the second dose against the Delta variant."
Levels of neutralising antibodies were also higher with the booster jab than with individuals who had previously been infected and recovered naturally.
Boosters 'limit Omicron spread'
The study was conducted by investigators from the University of Oxford, which is the academic institution which helped AstraZeneca develop the vaccine last year.
Researchers analysed blood samples taken from individuals infected with COVID-19; those vaccinated with two doses plus a booster; and those who had reported previous infection.
"It is very encouraging to see that current vaccines have the potential to protect against Omicron following a third dose booster," said University of Oxford professor John Bell, one of the study investigators. "These results support the use of third dose boosters as part of national vaccine strategies, especially to limit the spread of variants of concern, including Omicron."
Mene Pangalos, AstraZeneca's executive vice-president of biopharmaceuticals research and development, said that the study should boost confidence in the extra jab.
"Vaxzevria plays an important role in vaccination programmes around the world and these data give us confidence that the vaccine should be given as a third dose booster," said Pangalos.
"It is also important to look beyond antibodies to better understand how vaccines offer protection against Omicron. "As we better understand Omicron, we believe we will find that T-cell response provides durable protection against severe disease and hospitalisations."
European Medicines Agency director Emer Cooke said the watchdog could not definitively rule out a link between blood clot incidents and the vaccine in its investigation into 30 cases of a rare blood clotting condition.
Member states are struggling to contain a third wave of the epidemic and kick-start vaccine programmes slowed by a shortfall in deliveries, and Britain has warned the bloc against resorting "vaccine nationalism."
The fresh suspensions were a major blow to a global immunisation campaign that experts hope will help end a year-long pandemic that has already killed over 2.6 million people and decimated the global economy.
The announcement comes as the Ministry of Health and Prevention on Sunday expanded coronavirus vaccine eligibility in line with the UAE's proactive policy to ensure the health and safety of all community members.
Seven side sessions took place on the sidelines of the second day of the Dubai Metaverse Assembly, which convened more than 600 delegates at the Museum of the Future and AREA 2071, Emirates Towers, to lead discussions on the metaverse.
The case dated back to last January when an Asian filed a complaint in which he stated that he had been assaulted and robbed and his girlfriend was run over in a parking lot of a building in which he lived in Dubai Investments Park.
Maryam Nawaz is seen as the most influential politician in the ruling Pakistan Muslim League (Nawaz) party that has her uncle Shehbaz Sharif leading a coalition government at present.