Better Living Through Chemistry? Vaccine Resistance and Illness

Vaccines effectively prevent many infectious diseases, but they also exert powerful selection pressure on microbes, and evolving vaccine resistance suggests that it may be time to alter our strategy from biological whack-a-mole to chess.

Vaccine vial
Vaccines help our adaptive immune system recognize viral invaders before they can make us feel ill, but they also represent significant selection pressure, forcing the virus to evolve or die.
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