Coronavirus (CoV) are named for projections that look like solar corona or halos.

There are four broad groups:

gamma and delta infect birds and pigs
alpha mammalian
beta mostly bat and rodent based, HKU1, OC43, MERS and SARS, SARS‑CoV‑2

Beta Coronaviruses

  • Within the beta genus there is a subgenus called sarbecovirus (SARS Betacoronavirus). SARS-CoV-1 and SARS‑CoV‑2 are both sarbecoviruses.