Taiwan's government on July 19 said it had granted emergency-use approval to a coronavirus vaccine made locally by Medigen, with experts saying early data suggested it was similarly effective to AstraZeneca’s jabs.

The decision is a boost for the Chinese island, which has struggled to secure enough vaccines for its 23 million people.

Medigen Vaccine Biologics Corp’s vaccine – known officially as MVC-COV1901 – has yet to finish clinical trials although it published promising phase-two data last month.

Taiwan’s health authority said a panel of experts approved its use on July 18 and that the first inoculations for the public could begin as early as next month.

No details were given of its efficacy rate but the authority said Medigen’s antibody effect was “no worse than the Oxford-AstraZeneca vaccine jabs that the public have received … There are no major safety concerns”.

Chen Shih-chung, head of the authority, said “it will take some time to expand production capacity” but said the first small supplies for the public could be expected next month.

Medigen’s offering is a “subunit vaccine” which teaches the body’s immune system to recognise the spike protein that the coronavirus uses to invade cells.

It will be given to people over 20 years old in two shots.

Medigen has been told to submit monthly safety monitoring reports and an effectiveness report within a year, the island’s health authority added.

Taiwan’s government has signed contracts to purchase five million doses of the Medigen vaccine and the same amount from another local maker, United Biomedical, which has yet to receive emergency authorisation.

The Chinese island was lauded last year for having one of the best coronavirus responses in the world, stifling its initial outbreak and keeping the virus at bay for nearly a year with strict quarantine controls and world-class contract tracing.

But an outbreak that began in May among airline pilots has since led to widespread community transmission with the island now recording nearly 800 deaths and some 15,000 infections.

It had only received 726,000 vaccine doses before the US and Japan recently donated 2.5 million and 3.37 million doses, respectively.

After the Taiwanese government’s plans to acquire Pfizer-BioNTech vaccines from Germany’s BioNTech fell through, two Taiwanese tech giants reached an agreement with its Shanghai-based distributor.

Foxconn and Taiwan Semiconductor Manufacturing Co Ltd (TSMC), the world’s largest contract microchip maker, announced last week that they would each donate five million vaccines doses to the government, after signing a deal with Fosun Pharma.

But it will still need more jabs to fully inoculate its 23 million people.