One shot, two shots to covid safety?

One shot, two shots to covid safety?
Rebecca Stevenson
The UK is set to trial combining two vaccines, from Pfizer and AstraZeneca, in a two-shot regime to combat the coronavirus.The trial will look at the immune responses after administering the Pfizer and AstraZeneca vaccines as either a primary vaccine, or a booster shot, at intervals of four and 12 weeks.Both vaccines are currently being used in the UK.A survey released this year into attitudes towards vaccination found most people in Britain - 78 percent - were the most willing to be vaccinated against covid-19. The study surveyed 13,500 people...