"I’ve already touched on the fact that the initial cries for all to be vaccinated were based on achieving herd immunity. This was based on ‘science’, given that effective vaccines that reduce the risk of infection to near zero do offer the means to dramatically reduce the prevalence of a disease to near zero once the herd immunity threshold has been reached. In late 2020 this aspect of the Covid vaccination strategy was discussed in a paper by world expert (and former Chief Scientific Officer of the U.K. Ministry of Defence) Professor Roy Anderson. In this paper he discussed how herd immunity might be gained, the impact of a short duration of immunity (as short as 18 months of near complete protection!) and how the vaccines might be targeted to different parts of the population. Of particular note in this paper are the recommendation for an extended period of rigorous vaccine surveillance"
