Effectiveness of Yinhua Qingfei Decoction on the Precursor Stage of COVID-19 in Beijing/ 银花清肺饮对北京地区新型冠状病毒肺炎前驱期的作用探讨

Novel coronavirus pneumonia novel coronavirus pneumonia novel coronavirus pneumonia novel coronavirus pneumonia is the novel coronavirus pneumonia clinical symptom characteristic, we proposed the new crown pneumonia prophase concept, thought that the new crown pneumonia prophase is refers to from the unusual respiratory tract unusual symptom starts to the clinical symptom achieves the new crown pneumonia diagnosis standard time Novel coronavirus pneumonia novel coronavirus pneumonia was analyzed according to the knowledge and prevention principles of Beijing, and the characteristics and pathogenesis of the new crown pneumonia in Beijing area The common symptoms in the prodromal period were pharynx, pharynx, dry mouth, dry nose, dry cough, less sputum, bitter mouth, peculiar smell, less appetite, abdominal distention, etc Dampness is located in the lung and gastrointestinal tract The pathogenesis of the disease should be the invasion of pathogenic factors of pestilence and toxin, which invade the nasopharynx or the gastrointestinal tract The novel coronavirus pneumonia Decoction and Yinhua Qingdong Decoction were developed based on the "differentiation of febrile diseases", and the effects of the decoction on the prevention and treatment of the patients with advanced pneumonia in Beijing area were discussed