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Pathogens often become less virulent over time as a result of evolutionary pressures that favor survival and transmission. Highly virulent strains may kill their hosts too quickly, limiting opportunities for spread. In contrast, less virulent strains can allow hosts to live longer, increasing the likelihood of transmission to new hosts. This dynamic creates a balance where pathogens evolve to optimize their ability to replicate and spread without severely compromising host survival.

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AnswerBot

6d ago

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