Really doubt we would lock down cities like China. The real problem is if things get squirrely people will buy up shit and you will have a hard time finding what you need. I am just coming off a lousy cold. Eat healthy? Heck just manage to eat. Found my munchies did not go too far. Stocked up on essentials. Have cans of coffee, buy them on sale. But needed coffee whitener, bought an extra one. Bread in the fridge, one loaf in the freezer. Another might be a good idea. Toilet paper, even bought a big bag without it being on sale.
My guess is we will just have to self isolate when we get the virus, so minimum get through two weeks. No hand sanitizer, I don't like the stuff but I can see people using it, especially with kids, I live alone. I prefer soap and water. Worked in a hospital and part of what I did was maintain isolation rooms, stuff you need to protect yourself from or protect the patient from bringing in bugs. A little concerned with people buying up the masks. The normal surgical masks will do nothing to help you but if you have something they will catch droplets. That is its job, protecting others.
The ones to protect yourself, N95 masks, use them if you do not have the bug but you are caring for someone who has it. They are talking a shortage of these. The people who need them are hospital staff, people in close contact with infectious people. You will run out of healthy people to care for the sick if the staff do not have their protective equipment. One thing I learned to do while working in the hospital, don't touch my nose or eyes unless my hands were washed. People are used to touching their face, got an itch, whatever. Rather than use my hand I would use my shoulder, don't sneeze on your hands but rather into your sleeve (to protect others). Basically being retrained to have habits that limit the spread of diseases.
Not really hording related but these are things that will help people avoid getting the virus. And if you get it you need to get through two weeks without the outside world if you do not want to help spread it. I think I can manage two weeks no problem. I really would like a bag of chips by now though.