It is spread human to human via liquid droplets from coughing or sneezing. Attaches to ACE-2 receptors in the lungs and then duplicates inside the affected cells, destroys the tissue and attacks the immune system. It can be killed inside the body by lymphocytes (killer cells, T cells) which detect the infected cells and then attack them by injecting them with enzymes that destroy and dissolve them. So keeping your immune system frosty during this time is a good idea. (less alcohol, no smoking, plenty of water, antioxidants, vitamins/minerals, helpful herbs, and a well-balanced diet if possible.