University of Michigan - Ann Arbor

The viruses were firstly divided into these genera based on serology but are now grouped by phylogenetic clustering.
1. alpha
2. beta
3. gamma
4. delta

 Main sub-groupings of coronaviruses

Fehr, A. R., & Perlman, S. (2015). Coronaviruses: an overview of their replication and pathogenesis. In Coronaviruses (pp. 1-23). Humana Press, New York, NY. doi:10.1007/978-1-4939-2438-7_1 https://link.springer.com/protocol/10.1007/978-1-4939-2438-7_1

Coronaviruses: An Overview of Their Replication and Pathogenesis

Alpha coronaviruses

Genomic organization of representative α, β, and γ CoVs

1. HCoV-HKU1
2. HCoV-OC43 
3. HCoV-NL63
4. HCoV-229E
5. MERS-CoV 
6. SARS-CoV
7. SARS-CoV-2

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