common cold = caused by coronaviruses, COVID-19 = an uncommonly deadly coronavirus

RNA viruses have a faster mutation rate than DNA viruses.

Chickenpox = DNA virus, Coronavirus = RNA virus.

That Chickenpox is a DNA virus is why, like HIV, it can survive in the body for the long term and re-emerge decades later as shingles. DNA has a double helix which has error-correction and is more stable. However that makes it also physically larger and more complicated. RNA is small, sloppy, and cheap.

Source of all this: Spillover, David Quammen: https://www.amazon.com/Spillover-Animal-Infections-Human-Pan..., it's a good & topical book, a little bleak but good. There's a discussion of exactly this about halfway through the book.

So I do not believe your comment is factually correct. Sadly, the COVID-19 causing virus should have a high potential mutation rate similarly to all RNA viruses.

Here is another one, Spillover, by David Quammen. Apologies for the ugly link.

https://www.amazon.com/Spillover-Animal-Infections-Human-Pan...

Disease is going to be a major problem in the 21st century in general. Antibiotic resistance, diseases that "jump" from wildlife to humans, and even, perhaps, bioweapons, all seem to be major threats. Those interested in reading more might check out:

* Laurie Garrett's The Coming Plague http://amzn.to/2c9Vsoh

* David Quammen's Spillover http://amzn.to/2cm4ONj

Garrett's book is particularly good. I've not read a better summary of the political, economic, and social power disease will have over the next century.

https://www.amazon.com/Spillover-Animal-Infections-Human-Pan...

Is a good and accessible read on the subject. Though it won't do anything good for your ability to sleep.