Definition: The term "coronavirus" is used to refer to a group of viruses that infect the human body. These viruses can cause various respiratory illnesses, such as COVID-19. The specific type and severity of symptoms caused by a coronavirus depend on the strain of virus involved, as well as other factors such as age, health status, and genetics. It's important to stay informed about the current situation and take appropriate precautions to protect yourself and others from the spread of this contagious disease.