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Phylogenetic Tree and Genetic Relationships of Different Coronaviruses.
The high pathogenic human coronaviruses [severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), SARS-CoV, and Middle East respiratory syndrome coronavirus (MERS-CoV)] are highlighted in red. The low pathogenic human coronaviruses (OC43, 229E, NL63, and HKU1) are highlighted in blue.
