This is a graphic of data from the research which caused a major switch in tactics in the UK and helped accelerate efforts towards containment in the US. The research was performed by a team at Imperial College in London. Of course it depends on its assumptions and best estimated impact of them today and experts are learning more each day but this is the modeled impact of doing nothing but washing your hands (which people should do anyway). The Financial Times commented:

Sobering stuff. A bit more than the 'flu. (The lead researcher on the study has now contracted COVID-19.)
I recommend reading the full article here (although I can provide a link that can only be opened just 3 times):
https://giftarticle.ft.com/giftarticle/actions/redeem/91f491e0-2679-4d31-892b-b036504a85b1
No study has so exhaustively detailed the transmission of the virus through the UK and US population, the overwhelming pressure it has placed on health systems, or the limited effectiveness of individual measures to check its progress.

Sobering stuff. A bit more than the 'flu. (The lead researcher on the study has now contracted COVID-19.)
I recommend reading the full article here (although I can provide a link that can only be opened just 3 times):
https://giftarticle.ft.com/giftarticle/actions/redeem/91f491e0-2679-4d31-892b-b036504a85b1
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