Single dose of Pfizer-BioNTech or Oxford-AstraZenca vaccine reduces infection rate by 65%, study finds
A study by British researchers has found that the risk of Covid-19 infection in adults of all ages is drastically reduced by a single dose of Oxford-AstraZeneca or Pfizer-BioNTech’s Covid-19 vaccine. More than 1.6 million nose and throat swabs taken from 373,402 people between December and April were analysed in two studies released on Friday.…









