Based on differences in protein sequences, CoVs are classified into four genera (alpha-CoV, beta-CoV, gamma-CoV and delta-CoV). The Beta-CoV genus contains the majority of HCoVs and is divided into four lineages (A, B, C and D).
Upeo huu ulifikiwa siku hiyo hiyo ambapo nchi ya Malawi ilithibitisha maambukizi yake ya kwanza ya visa vya korona na Zambia ilithibitisha kifo cha kwanza kilichohusiana na virusi vya korona.