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10<br />

HISTORIA<br />

Teoría unicausal a toda<br />

reacción correspondía<br />

una causa única pero no<br />

explico por que algunos<br />

patógenos no siempre<br />

producía enfermedad.<br />

XIX mitad siglo y principio<br />

XX Pasteur y koch.<br />

Mitad siglo XX Modelo<br />

multicausal (leavell y<br />

clarck<br />

<strong>03</strong>/<strong>07</strong>/<strong>2013</strong>

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