Corona Virus Disease ***9 (COVID**9) is an acute infectious disease
caused by ***9 novel coronavirus (SARS-CoV*2). The incubation
period of the disease is ***4 days, mostly **7 days. The incubation
period is infectious. Asymptomatic infections may also be the
source of infection. Respiratory droplets and contact are the main
routes of transmission. The initial symptoms of the patients were
fever, fatigue and cough, and gradually developed dyspnea and other
serious manifestations. Most of the patients have a good prognosis,
some of the severe cases may have acute respiratory distress
syndrome or septic shock, or even death. At present, there is no
specific treatment for the disease.
