COVID-19: The Origin
Silvere D Zaongo1* and Dieudonne Ouattara2
1Division of Infectious Diseases, Chongqing Public Health Medical Center, Chongqing, China
2Centre de Recherche Clinique De Nanoro, Burkina Faso
*Corresponding Author: Silvere D Zaongo, Division of Infectious Diseases, Chongqing Public Health Medical Center, Chongqing, China.
November 26, 2021; Published: December 07, 2021
In December 2019, cases of the third zoonotic human coronavirus epidemic were reported in China. They triggered the curiosity of local medical officers who-in the absence of evidence showing the presence of typical pathogens-had collected lower respiratory tract samples to conduct a sharp sequencing analysis revealing (in January 2020) the presence of a novel coronavirus named SARS-CoV-2 . Similarly, to severe acute respiratory syndrome coronavirus (SARS-CoV) [2-4] and Middle East respiratory syndrome coronavirus (MERS-CoV) [5,6]. SARS-CoV-2 viral pneumonia is associated with symptoms such as fever, difficulty breathing, and bilateral lung infiltration in the most severe cases . SARS-CoV and MERS-CoV have caused more than 10,000 cumulative cases in the past two decades, with mortality rates of 10% for SARS-CoV and 37% for MERS-CoV [8,9]. At the time of revision of this editorial (November 26, 2021), it was established that SARS-CoV-2 alone caused more than 260,200,000 and 5,100,000 cumulative cases and deaths, respectively .
Keywords: COVID-19; SARS-CoV; MERS-CoV; SARS-CoV-2
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