If you would like some concise details about the virus and its risks, I would watch all the videos produced by this doctor. [1] I am not too concerned for myself, as I keep my immune system very strong. I am concerned for others that I care about that spent time around smokers, as they and elderly are at the highest risk. Read up on ACE2 as this is a big part of the risk to smokers. [2]
In my opinion, the best you can do is to not stress over the bits you can not control (rumors, numbers, etc). Stress will weaken your immune system. You can also reduce the load on your immune system by eating healthy (remove sugar, carbs) and getting exercise when you can. Get plenty of real vitamin C from green leafy vegetables, zinc, I'm sure you know all of this. If you have loved ones that smoke, try to get them to at least temporarily use the patch or nicotine gum for a while.
[1] - https://www.youtube.com/watch?v=GT3_A1bf9pU
[2] - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2798380/