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Las enfermedades infecciosas

Muchos microorganismos, y también virus, requieren de una asociación con otro ser vivo para su ciclo vital.

Si la asociación beneficia a ambos, es mutualismo.

Si la asociación solo beneficia a uno de los integrantes, es parasitismo. El beneficiado es el parásito, que se aprovecha del hospedador.

Una infección ocurre cuando el parásito se extiende, alterando la actividad del hospedador.

Un agente patógeno es una estructura biológica que causa enfermedades infecciosas.

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Hongos y protozoos

By Fran Moraleda