The hazards of severe pneumonia are as follows: 1. Hazards to society: Infectious severe pneumonia, such as SARS and avian influenza, is prone to cause outbreaks in a certain region or country, and produces certain hazards to society; 2. Hazards to individuals: Unlike ordinary pneumonia, severe pneumonia is more severe and causes great damage to the human body, mainly in the form of damage to multiple organs. Damage to the heart leads to heart failure; damage to the liver leads to liver failure; damage to the blood system, there can be a decrease in white blood cells, platelet reduction; damage to the kidneys appear oliguria, and even the need for hemodialysis treatment.