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?:abstract
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The novel coronavirus is a novel emerging pathogens, it is one of typical zoonotic pathogens, which causes Coronavirus disease 2019(COVID-19) Because COVID-19 affected many countries and regions and caused serious public health safety problems, it was judged by WHO as a global pandemic disease The novel coronavirus has strong transmission ability among individuals, and all the persons with susceptibility Patients are the most important sources of infection And the most important transmission route mainly include droplet transmission, contact transmission and aerosol transmission under specific conditions COVID-19 spread rapidly to all countries in this world, a total of 211 countries and regions have reported COVID-19 cases until 20-April-2020, and over 2 47 millions of individuals were confirmed diagnosed and 170 thousands were death globally Most of the COVID-19 patients have mild symptom, such as fever, cough, myalgia, fatigue, diarrhea, dyspnea, etc , however, a few COVID-19 cases have acute respiratory distress syndrome, and they were complied with serious respiratory complication, and even death The etiology feature and epidemiological characteristics of COVID-19 were reviewed in this paper, it will provide reference for the prevention and control of COVID-19 disease
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