| Comment | There is no herd immunity strategy, that was scrapped back in March once they realised that would lead to (optimistically) 150,000 deaths in the first wave.
The lockdown is not about reducing exposure to at-risk people, it's solely about reducing the transmission rate to below 1 and containing the infection. Currently in Scotland R is somewere between 0.7 and 1. If we let everyone under 40 go to work the transmission rate would be back above 1 and the virus would spread exponentially.
If the R is greater than 1, then hundreds of thousands die. If it is less than 1, it is under control. In time we'll learn to what extent we can relax restrictions (re-opening schools, some workplaces) while still keeping R under 1. The more tracing and testing we can do the more that can displace some of the need for reduced movement.
All best explained here: https://ncase.me/covid-19/
And see p25 of [this](https://www.gov.scot/binaries/content/documents/govscot/publications/advice-and-guidance/2020/05/coronavirus-covid-19-framework-decision-making-further-information/documents/coronavirus-covid-19-framework-decision-making-further-information/coronavirus-covid-19-framework-decision-making-further-information/govscot%3Adocument/coronavirus-covid-19-framework-decision-making-further-information.pdf) for a good summary of ScotGov's strategy |
|---|