Market wellness Scotland and also the college of Edinburgh printed the research as a booster program for susceptible group and over 50s started.
Young ones aged 12 to 15 will be able to have a Covid vaccine in Scotland.
The injections for younger teens are going to be available at drop-in centres and soon after in schools.
More mature care residence citizens are iranian singles the first to-be provided a booster jag.
The study found those classified as clinically incredibly vulnerable got 66per cent protection against extreme disease after two vaccine amounts, weighed against 93per cent defense in totally vaccinated men and women without having any high-risk problems.
Experts stated they wished a third booster vaccine would boost defense grade more if you had earlier already been asked to protect.
Greater than 3.5 million those that have got two vaccine dosage in Scotland, the study found merely 330 problems of extreme Covid-19.
Around half happened to be in anyone whoever health issues intended they certainly were classed as acutely susceptible. A lot of rest had been in individuals with considerably moderate possibility ailments.
Prof Helen Colhoun, from the institution of Edinburgh, said: that we come across a boost in protection from the first ever to the 2nd amount brings hope that a third dose might boost safeguards further.
Dr Nicholas Phin, manager of general public fitness research at people Health Scotland, mentioned: The results for this research concur that the vaccines approved to be used in britain continue being effective at decreasing extreme problems and dying from Covid-19.