I think, Arlo, we can't know how it will effect us. I have heard many people have had it and didnt even realise they got it! Others have had mild to severe flu like symptoms. and sadly some have died. But there are many many people who do get over it. We just have no idea how it will effect us personally. Im diabetic, pushing 60 and have asthma. But i try not to fret. What will be will be. We can only do what they suggest (and anything else we can think of to keep this at bay). We just have to be sensible. Think about whether we really need to be going out to the pub, club, seeing friends, going to busy places. And when we do, just be aware of our surroundings, washing hands whenever we can (thoroughly). Leave your shoes at the front door, dont wear slippers outside. Change towel/clothes each day. (little things like that) A little extra care. Keep indoors nice and clean, give surfaces and tinned foods a little wipe down when you bring it back from the shop. (Seems crazy but it wont do any harm).
Staying as well as we can with diet and exercise. Take a walk in the evening/ early morning, when no ones around. sit in the garden (if you have one) or the park if you dont, get some sun on your face.
Whilst we are stuck 'indoors' maybe think about doing those little odd jobs you have been putting off. (clear out that understairs/bedroom cupboard. Take up that book you have been promising yourself to read. I have been doing jigsaws puzzles (those's ones people bought me for birthday presents that i never got around to finishing, its been fun!) - I think we need to occupy ourselves whilst this is going on and try not to get too caught up in all the panic.
We can only do what we can do - its in the lap of the Gods!