A total of 145 countries and territories still haven't begun vaccinating against the coronavirus, with 10 nations having administered 82 per cent of the jabs.
The latest figures from Our World in Data show the UK - which has so far rolled out nearly 18 million first doses - is among a select few countries dominating supplies.
The others are the US, China, India, Israel, Brazil, Turkey, UAE, Germany and Russia.
However, there are others listed for having not started roll-outs, including New Zealand, South Korea and Australia, which have already got a firmer handle on the virus than many others.
Australian Prime Minister Scott Morrison, meanwhile, was pictured receiving his vaccine over the weekend as the country prepared to begin offering jabs to the general public.
The UN Secretary-General António Guterres has called for more efforts to be made to spread out the inoculations, calling progress "wildly uneven and unfair".
Speaking at a security council open meeting last week, Mr Guterres said: "Vaccine equity is the biggest moral test before the global community.
"Defeating Covid-19, now that we have begun to have the scientific capacity to do so, is more important than ever.
"The rollout of Covid-19 vaccines is generating hope.
"At this critical moment, vaccine equity is the biggest moral test before the global community.
"We must ensure that everybody, everywhere, can be vaccinated as soon as possible."
So far, over 209 million doses have been administered in 92 countries, with the world's population at 7.7 billion.
According to Bloomberg's Vaccine Tracker, an average of 2,470,772 jabs are being given out a day.
Currently, 2,493,795 people have been confirmed to have died worldwide from the virus, amid 112,589,753 reported cases.
The Secretary-General went on to say if the virus continues to spread "like wildfire" anywhere in the world it will "mutate again and again" and potentially corrupt current vaccines.
"Those affected by conflict and insecurity are at particular risk of being left behind," he said.
"When pandemic strikes, we are only safe if everyone is safe."
He said the COVAX programme, a global tool to procure and deliver vaccines to low and middle-income countries, needs to be "fully funded".
And wants a Global Vaccination Plan "to bring together with the required power, scientific expertise and production and financial capacities".
"Our efforts need to be comprehensive and well-coordinated everywhere," he said.
The Pfizer/BioNTech, Oxford/AstraZeneca and Moderna vaccines have all been approved for use in the UK, as well as a number of other countries, and need two doses for full cover.
Public Health England yesterday published real-world data showing the Pfizer jab reduces the risk of catching infection by more than 70 percent, rising to 85 percent after the second dose.
Figures from the latest AstraZeneca trials show a vaccine efficacy of 76 per cent after one dose and an increase to 82 per cent with a second dose after 12 weeks.
Data suggests the Moderna has a first dose efficacy of 92.1 per cent, rising as high as 95 per cent after two.
Other vaccines available are Russia's Sputnik V - approved for use in several countries - and China's CanSino Biologics, which has been approved for military use there, as well as in Mexico and Pakistan.
The British Foreign Secretary Dominic Raab said: "Vaccinating everyone, everywhere, is our collective way out of this pandemic and building back stronger.
"The UK is clear that as a world leader we have a moral and national interest in making this happen, which is why we are committing to share the majority of any future surplus doses with COVAX to support the countries who need them most.
"We are already one of the biggest donors to COVAX, helping get more than one billion doses to the world’s poorest people.
"International cooperation has to be at the heart of this effort, so we are calling on the G7 and other nations to step up support to get vaccines to everyone."
The following data is correct as of February 19.
The 145 countries and territories still waiting
Antigua and Barbuda
Bonaire Sint Eustatius
Bosnia and Herzegovina
British Virgin Islands
Central African Republic
Democratic Republic of Congo
Northern Mariana Islands
Papua New Guinea
Saint Kitts and Nevis
Saint Martin (French part)
Saint Pierre and Miquelon
Saint Vincent and the Grenadines
Sao Tome and Principe
Sint Maarten (Dutch part)
Trinidad and Tobago
United States Virgin Islands
Wallis and Futuna