How to prepare yourself for COVID-19 and isolation and so on is a difficult question.
If you’ve got chronic illness and you’re on medication say for cholesterol, or heart failure, or chronic obstructive pulmonary disease it’s a smart move to fill in one repeat. Not sixteen repeats because it would be a complete disaster if you have a run on pharmacies the way we had a run on toilet paper – that would kill people. But it would be a smart move to have one month supply so that you have got plenty in your drawer. You should probably have that anyway, so I think the smart move, have one month’s supply, a back up supply, and just always have one month’s supply but don’t have 3 months’ supply, and that’s a good way of keeping prepared.
And the other things are just keep regularly shopping so you have a well-stocked fridge and so on. In countries where there has been major shut downs like South Korea, now Italy, supermarkets stay open so you can go and shop and get your foodstuffs, and even in China where there was unbelievable lock down they had delivery services to allow you to pick up your groceries. There is no need to go into massive hoarding, but probably prudent stocking of the freezer is not a bad thing to do.