Well, if you are going to advocate a mad panic so the government confines us all to our houses for three weeks, let us know on here so I can organise my Sainsbury's delivery.
You call it a "mad panic". I call it sensible precautions
https://www.bbc.co.uk/news/uk-51442314
People these days regularly travel worldwide, very easy to spread a contagious disease- one sneeze or cough and you infect those around you.The domino effect
BTW You might be lucky that there are still workers at Sainsbury to organise your delivery