COVID passports will only reduce overall community transmission by just one to five per cent.The research, which outline the impact of the government’s potential Plan B for the winter, was conducted by the UK Treasury and the Cabinet Office’s COVID-19 Taskforce, according to The Telegraph.They found a COVID certification scheme would reduce transmission at mass events by 40-45 per cent.But the research warned that, because only two to 13 per cent of overall community transmission takes place in venues covered by the scheme, there would only be a “moderate impact from reduced community transmission.”As a result the figures suggest certification would reduce overall community transmission by just one to five per cent.Reacting to the figures,.