Throughout the covid-19 pandemic determination has been changeless notation to the tantalising improvement that signals the end: herd immunity. This is erstwhile capable radical are immune to a microorganism that it can’t spread, truthful protecting the full community, including those who aren’t immune.
More than 18 months into the pandemic, and with 59 per cent of the UK having received 2 doses of a covid-19 vaccine, however acold is the state from the herd immunity threshold, and however volition …