3 ms·
Depends whether the targeted antigen has changed. Best case (for humans) is if it couldn't escape the targeting without deactivating the virus. RNA viruses do
by jimworm 7y ago
Depends whether the targeted antigen has changed. Best case (for humans) is if it couldn't escape the targeting without deactivating the virus.
RNA viruses do change quickly, but influenza's probably on a different level with its multi-segment, randomly assorted genome.