An elderly man develops a respiratory infection characterized by frequent changes in viral surface antigens. Which virus is known for this high mutation rate?
Q1. An elderly man develops a respiratory infection characterized by frequent changes in viral surface antigens. Which virus is known for this high mutation rate?
Answer: Influenza virus
Explanation: Influenza viruses undergo frequent antigenic changes. Rhinovirus causes the common cold but is not as famous for major antigenic shifts like Influenza.