To date, five coronaviruses (HCoV-229E, HCoV-OC43, SARS-CoV, HCoV-NL63 and HCoV HKU-1) that infect humans have been identified, four of which (HCoV-229E, HCoV-OC43, HCoV-NL63 and HCoV-HKU-1 ...

Over the last few years, the SARS-CoV-2 virus, responsible for COVID-19, has undergone significant changes, evolving from the original wild-type strains to the highly transmissible Omicron variant.