What is "antigenic drift"? A. A new subtype of virus

Last updated: 7/23/2022

What is "antigenic drift"? A. A new subtype of virus generated by mixing two or more different viruses B. The frequent generation of mutated virus that produce new strains of viruse C. Antigenic variation observed in oncoviruses D. The antibody-production induced by viral infections E. None of the above