SAO PAULO: AstraZeneca said on Wednesday it is working to offer its COVID-19 vaccine to Brazilians as soon as possible, seeking regulatory approval in Brazil after authorization in the UK.

Britain on Wednesday became the first country in the world to approve the coronavirus vaccine developed by Oxford University and AstraZeneca. The U.K. approval offers hope to Brazil, which has made the cheap and sturdy British vaccine the cornerstone of its widely criticized vaccine plan.

President Jair Bolsonaro, a prominent coronavirus skeptic who has said he will not take any COVID-19 vaccine, is under pressure to speed up Brazil's rollout, as regional peers Mexico and Chile have already begun immunizations.

The Fiocruz biomedical institute, overseen by the federal government, has partnered with AstraZeneca on trials and production of its vaccine, with plans to buy 100 million doses for the government by June and eventually produce it locally.

Fiocruz said it will seek approval for the AstraZeneca vaccine on Jan. 15. Health Ministry officials say nationwide vaccinations could begin Jan. 20 in a best-case scenario.

In its statement, AstraZeneca said it would keep up the ongoing submission of its late-stage trial results in order to seek full regulatory approval, but made no mention of seeking emergency use approval: a process that vaccine maker Pfizer Inc has described as cumbersome in Brazil.

The U.K. approval may add to pressure on Brazilian health regulator Anvisa to expedite its own approval processes.

Anvisa did not immediately respond to a request for comment.

While some vaccines, such as Pfizer's COVID-19 shot, must be supercooled to -70 degrees Celsius (-94 Fahrenheit), the AstraZeneca vaccine only needs normal refrigeration, making it a more robust candidate for developing countries such as Brazil.