Hey Nigel, That was meant as a Joke bro, about pubs and churches being closed etc.,, oh well.
Ok, when I was doing Disability Support, that was the figure that was quoted for National average for Influenza and other Viruses, that the population have to get to for strain to die out or down to a manageable level.
Here is a link to your HHS Public Access medical documentation on age related info on the above scenario.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3514506/Ok,, it is NOT COVID - 19 and but it is on what I was mentioning just previous influenza Viruses that have been experienced in the past.
there is a lot if info there and various percentages for different age groups but mostly the older people ( like us).
This is what I was mostly referring to.