"During the pandemic, we priced our vaccine consistent with the urgent global health emergency we are facing to ensure widespread vaccination for all countries", he added. Five million people - mostly front-line workers - will be given the first shots.
About 650,000 people in Scotland received the Pfizer vaccine during the study period and 490,000 had the AstraZeneca shot, according to the Usher Institute.
The number of coronavirus cases has been falling for a while now across the United Kingdom, along with the number of people in hospital and deaths linked to the disease.
The government's effort to secure vaccines has led to foreign pharmaceutical companies being given liability exemptions with the Japanese government agreeing to take responsibility for the possibility of side effects. How do we know the fall in cases, serious illness and death is not due to lockdown measures?
The study, released as a preprint ahead of peer review, is hosted on the University of Edinburgh website (https://bit.ly/3aHQXzh), and has been uploaded to the SSRN preprint site, according to a University statement.
Best-case forecasts consider vaccine deliveries from AstraZeneca, Johnson & Johnson and Novavax and estimate 64 per cent of the population could be fully vaccinated by the end of June.
The work led by Public Health Scotland found by the fourth week after the first dose hospitalisations were reduced by 85% and 94% for the Pfizer and AstraZeneca jabs respectively.
Within weeks, one shot reduces the risk of being admitted to hospital by at least three-quarters for the over 80s.
The risk of dying in those aged over 80 is less than half (56%) in vaccinated cases compared to unvaccinated cases, at least 14 days after receiving the first dose.
The Kent variant of the virus was found to be the dominant one in this group of people.
Labor MP Peta Murphy volunteered to show the vaccine is safe for people with underlying health conditions
Dr Mary Ramsay, head of immunisation at PHE, said this was at the "lower end of the estimate" and the drop in hospital admission and death was thought to be even more profound.
The first COVID-19 vaccine to be approved a year ago for emergency use in the United States was based on cutting-edge mRNA technology.
Vaccination has been linked to a substantial reduction in the risk of Covid-19 admissions to Scotland's hospitals, landmark research suggests.
Ahead of his announcement today, vaccination rates will be one of the key tests to unlocking the country. New studies out of Israel show the Pfizer vaccine not only prevents severe sickness but also stops the transmission of the virus.
"Reducing the people with infection, both symptomatic and asymptomatic, is the biggest thing that will reduce transmission", said Susan Hopkins, strategic response director to Public Health England.
The PHE study also showed high levels of protection against the so-called United Kingdom variant.
"But even with high vaccine levels, and indeed quite high vaccine coverage, it's important to remember that a large number of people in the population remain unprotected". Israel has vaccinated nearly half its adult population.
The UK was the first to authorized the Pfizer/BioNTech vaccine, BNT162b2, and started its vaccination campaign on December 8.