Thanks for your helpful thoughts, everyone.

I agree that it's very important to use disinfectants judiciously, especially since mixing some may cause an adverse chemical reaction (or at the very least, ruin various household surfaces.)

Another thing might be to have the phone number of your local doctor/clinic/hospital handy, so you can call ahead if you or someone in your family gets seriously ill. That way, there would be less of a chance that others would become infected via the waiting room, etc.