In this Harvard article, they explain the vulnerable versus the resistant:
What are the symptoms of this coronavirus?
The symptoms can include a cough, possibly with a fever and shortness of breath. There are some early reports of non-respiratory symptoms, such as nausea, vomiting, or diarrhea. Many people recover within a few days. However, some people — especially the very young, elderly, or people who have a weakened immune system — may develop a more serious infection, such as bronchitis or pneumonia.
How do you know if you are one of the more vulnerable? It's not just about age - it's about resilience which we measure very accurately and precisely.
Here is a video by myself and Dr. Trent Austin (MD) on the coronavirus, what it is, and how you can protect yourself if exposed.
Note: we do not use the term "coronavirus" in this video because youtube is taking videos with natural protection methods down.
Thomas J. Lewis, Ph.D.