antigenic variability

How Does Antigenic Variability Impact Disease Transmission?

Antigenic variability can significantly impact disease transmission by creating new strains that can spread more easily in populations with pre-existing immunity. For example, the frequent antigenic shifts and drifts in influenza viruses can lead to seasonal epidemics and occasional pandemics. This constant evolution necessitates regular updates to influenza vaccines to match the circulating strains.

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