Influenza successfully reinfects due to antigenic variability, where rapid pathogen mutation means antigens are no longer recognized, preventing a secondary immune response and allowing the disease to occur.
- antigenic variability - pathogen mutates too quickly - antigens no longer recognised - secondary immune response does not occur - disease occurs
| Front | Why does influenza successfully reinfect? |
|---|---|
| Back | - antigenic variability - pathogen mutates too quickly - antigens no longer recognised - secondary immune response does not occur - disease occurs |
Tags: immunity
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