What are the symptoms of novel coronavirus?

Novel coronavirus is called COVID-19 for short. In February 2020, China was named novel coronavirus, and in May 2020, the World Health Organization named it coronavirus pneumonia-19, that is, 20 19 coronavirus. Symptoms of upper respiratory tract and lung will appear after infection, and symptoms such as nasal congestion, runny nose, sore throat, loss of sense of smell, loss of taste, fever and cough will appear at the initial stage of infection. After lung infection, there will be cough, mainly dry cough, severe cough, accompanied by chest tightness, asthma and dyspnea, which is a symptom that the lung changes from ground glass shadow to consolidation, and is a manifestation of hypoxia.

X-ray or CT showed that both lungs were scattered in the ground glass shadow, which was a mild patient. Ordinary patients will have patchy shadows and consolidation shadows, as well as ground-glass shadows. In severe cases, the consolidation of both lungs is gradually aggravated, and even the whole lung turns white, that is, the phenomenon of white lung. Severe dyspnea and asthma can occur in critically ill patients in novel coronavirus, and the respiratory rate can reach more than 30 beats/min, or even more than 40 beats/min. At this time, intubation, ventilator-assisted ventilation and even extracorporeal membrane oxygenation (extracorporeal membrane oxygenation) are needed to save lives. Patients will also have symptoms such as limb weakness, high fever and septicemia caused by poisoning. Because of its high infectivity, high pathogenicity and high mortality, novel coronavirus is classified as a type B infectious disease and managed as a class.