Author(s)

Zhou Zhou

Corresponding Author

Zhou Zhou

Abstract

Since the outbreak of COVID-19 in 2019, it has spread worldwide through person-to-person transmission, resulting in economic decline and killing millions [1]. The COVID-19 virus is a type of coronavirus, similar to SARS in 2003 and MERS in 2012, and symptoms of it range from mild ones, like fever and cough, to serious respiratory diseases, such as pneumonia. By 2022, 600 million cases had been diagnosed with 6.48 million deaths worldwide. This essay illustrates the factors that cause serious cases, including life habits, gender, age, underlying diseases, race and viral strains and the treatments for them are embodied in the second half, in order to improve the understanding of this virus. Meanwhile, the purpose is also to instruct people to prevent infection.

Keywords

Possible Factors, Covid-19, Treatment