반응형 covid-191 About covid-19 COVID-19 1. Overview: Definition: COVID-19 stands for "Coronavirus Disease 2019." It is a highly contagious respiratory illness caused by the novel coronavirus known as SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2). Origin: COVID-19 was first identified in Wuhan, China, in December 2019 and quickly spread globally, leading to a pandemic. Transmission: The virus primarily spreads t.. 2023. 9. 22. 이전 1 다음 728x90 반응형