What are the areas of infection in COVID-19?

Virus field. COVID-19 is a Class B infectious disease, and its transmission routes include droplet transmission, fecal transmission and contact transmission. The symptoms of infection depend on the virus type and the patient's own physical condition. Common symptoms include respiratory symptoms, fever, cough, shortness of breath and dyspnea. In severe cases, it may lead to acute respiratory syndrome, shock and even death. COVID-19 is highly contagious, but it can be prevented and cured. Personal hygiene and epidemic prevention can effectively reduce the probability of infection, adjust one's psychological state, find treatment as soon as possible and have a good prognosis.