Flu vaccine gives only 'low protection' in UK this winter, experts warn

Still important not to discourage those in at-risk groups from having flu jab, says Public Health England The flu vaccine issued this winter only provides "low protection" against the main strain of the virus spreading around the UK, health experts have warned. The vaccine was estimated to work in just 3% of cases in lab tests, compared with a more typical past effectiveness of 50%, Public Health England (PHE) said.