摘要
Emerging and re-emerging viral diseases pose a serious and continuous threat to the human society and place a heavy burden on the ecological system. Because of globalization,endemic viruses could be transmitted quickly across long distances, causing pandemic outbreaks. This has happened during the outbreak of the avian influenza viruses, Ebola virus, and Zika virus in recent years (Gao, 2018). Sudden viral attacks always evoke a large number of questions from the public. People ask what the pathogen is and where it is from, by what mechanism it infects the body, how they
Emerging and re-emerging viral diseases pose a serious and continuous threat to the human society and place a heavy burden on the ecological system. Because of globalization,endemic viruses could be transmitted quickly across long distances, causing pandemic outbreaks. This has happened during the outbreak of the avian influenza viruses, Ebola virus, and Zika virus in recent years （Gao, 2018）. Sudden viral attacks always evoke a large number of questions from the public. People ask what the pathogen is and where it is from, by what mechanism it infects the body.
