It is being said that a too early relaxation of national and local ‘social distancing’ guidelines for the recent Covid-19 pandemic might result in an uptick of new cases or even re-infections in the Fall of 2020, and this possibility is being been compared to what happened during the Spanish Flu epidemic, when…
...people stopped distancing too early, leading to a second wave of infections that was deadlier than the first, epidemiologists say.
According to Ngrams, and Google.books, the phrase ‘social distancing’ was used in its present context (i.e. distance maintained for sanitary purposes) for only the last couple of years, and prior to that considered to be a sociological term (indicating inter-personal issues) .
By 1919 , it was accepted as being the main reason for the resurgence of the flu pandemic, mostly due to citizens enjoying a mis-guided expression of basic rights. However, I cannot find use of the phrase 'social distancing' from that time. Most of the literature refers to a "let's take off our masks and breathe freedom" type of thing.
So what was the expression used at that time to describe ‘social distancing’?
If it was accepted at that time as an accepted form of prevention, what phrase did they use to describe the concept of ‘social distancing’?