People who are susceptible to the new coronavirus are those with underlying diseases, such as diabetes or autoimmune diseases such as AIDS, and those with long-term respiratory diseases such as chronic obstructive pulmonary disease (COPD) and asthma, whose autoimmune function is low. According to Chinese medicine, the lung is the main body of defense and can resist external evil. If they have underlying diseases in the lungs or chronic systemic diseases, they have a weak resistance to external diseases, which means they are susceptible. The susceptible population has a higher incidence of NCCV infection than other conventional populations, with a higher chance of pneumonia, and a higher incidence of severe and critical illnesses, and a higher death rate. Most deaths due to NCCV pneumonia in Hubei are in patients with underlying disease. Therefore, during the New Coronavirus epidemic, susceptible people with underlying disease should pay full attention and be protected. Content source: Dr. You Lai