Those countries took months to reach where they are, painstakingly strengthening their vaccination campaigns in the face of rising coronavirus cases.

But the story of Bhutan's vaccination campaign is nearly finished - just 16 days after it began.

The tiny Himalayan kingdom wedged between India and China has vaccinated nearly 93 per cent of its adult population since March 27.

Overall, the country has vaccinated 62 per cent of its 800,000 people.

The rapid rollout of the vaccine puts the tiny nation just behind the Seychelles, which has given jabs to 66 per cent of its population of nearly 100,000 people.

Its small population helped Bhutan move fast, but its success has also been attributed to dedicated citizen volunteers, known as 'desuups', and established cold-chain storage facilities used during earlier vaccination drives.

Bhutan received its first 150,000 doses of the AstraZeneca vaccine from neighbouring India in January, but the shots were distributed beginning in late March to coincide with auspicious dates in Buddhist astrology.

The first dose was administered by and given to a woman born in the Year of the Monkey, accompanied by chants and Buddhist prayers.

"Let this small step of mine today help us all prevail through this illness," the recipient, 30-year-old Ninda Dema, was quoted by the country's Kuensel newspaper as saying.

Doctor Pandup Tshering, secretary to the Ministry of Health, said jabs were still being provided to those who could not get vaccinated during the campaign period and that the country had enough doses to cover its entire population.

Bhutan has recorded 910 infections and one COVID-19 death so far.

It has a mandatory 21-day quarantine for all people arriving in the country.

All schools and educational institutions are open and are monitored for compliance with COVID-19 protocols, Tshering said.

Australian Associated Press