Why herd immunity to COVID-19 is reached much earlier than thought
nicholaslewis.org Nicholas Lewis | May 10, 2020 A pdf copy of this article is available here. Introduction A study published in March by the COVID-19 Response Team from Imperial College (Ferguson20[1]) appears to have been largely responsible for driving government actions in the UK and, to a fair extent, in the US and some other countries. Until that report came out, the strategy of the UK government, at least, seems to have been to rely on the build up of ‘herd immunity’ to slow the growth of the epidemic and eventually cause it to peter out. The ‘herd immunity threshold’ …








