COVID-19 is dangerous because it affects your respiratory system and can even cause death due to involvement of the lungs and is easy to spread. The ease with which the virus spreads from person to person can vary. Some viruses are highly contagious, like the measles virus, while other viruses do not spread as easily. Another factor to consider is whether the spread is sustained, that is, it spreads continuously from person to person. COVID-19 can be transmitted primarily by close contact of a person through respiratory droplets from an infected person. The virus can also be spread by touching something a person infected has touched and then touches the mouth, nose or eyes. Caregivers can sometimes be affected by handling a patient's waste. People who are most at risk for COVID-19 infection are adults, people with respiratory problems, or people with a variety of diseases. These people are at higher risk because the COVID-19 is a disease that affects the lungs, affecting breathing, and also if a person has multiple diseases, it can affect each of them.