If reproduction of itself is why pathogens infect hosts, wouldn’t it be best for them to infect and keep the host alive rather than causing death? Do they just reproduce too much and kill the host without understanding that it would result in the host dying and themselves with it?
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Pathogens are, by definition, causing damage. If it didn’t cause issues they would be commensal, mutualist, or symbiotic. Plenty of microbes have these other types of relationships.
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