Single dose of Pfizer’s Covid vaccine stops three-quarters of people from spreading disease
A single dose of the Pfizer/BioNTech coronavirus vaccine may block 75 per cent of symptomless infections, a study on NHS workers has suggested. Asymptomatic screening of staff at Addenbrooke’s Hospital in Cambridge showed the number of people testing positive fell from 0.8 per cent to 0.2 per cent 12 days after their injection. The ‘very impressive’ … Read more