Concerns about the safety of Covid-19 vaccines fuelled by online misinformation may endanger the goal of herd immunity, a study has suggested.
The research showed that even a short exposure to misinformation about vaccines could be enough to make three million adults change their minds about being inoculated.
This could leave less than half the population protected, meaning that Britain would not pass the threshold thought to be needed for herd immunity, preventing the growth of new outbreaks.
The study, led by Heidi Larson of the London School of Hygiene & Tropical Medicine, asked 4,000 adults about their willingness to accept a potential Covid-19 vaccine.
Before being exposed to misinformation, 54 per cent of those surveyed said that they definitely would.
After they were