科研之友
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<正>COVID-19, a highly contagious respiratory infection caused by the SARS-Co V-2 virus, was first identified in December2019 and has rapidly expanded to become a global pandemic[1]. From then on, millions of people were infected, while the exact number of infections is difficult to determine, as not all people who are infected with the virus get tested, and some may not show any symptoms, and the number is rising as the pandemic continues. The sickness is characterized by fever,cough,
