As a Microbiology student, suggest whether corona virus infection is caused by Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) caused by an antigenic shift or an antigenic drift. (Please note that there is a correct answer but this is dependent on your explanation)

Which of the following accounts for someone who has had regular herpesvirus-mediated cold sore or genital sore flare-ups? a) re-infection by a closely related herpesvirus of a different strainb) re-infection by the same herpesvirus strainc) copies of the herpesvirus genome permanently maintained in host nucleid) copies of the herpesvirus genome permanently maintained in host cell cytoplasm