HOW STABLE IS THE POPULATION SHIFT TO EIMERIA STRAINS CONTAINED IN THE VACCINE?

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HOW STABLE IS THE POPULATION SHIFT TO EIMERIA STRAINS CONTAINED IN THE VACCINE?

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A. It is not a permanent change its a shift. The vaccine strains become predominant in the absence of drug pressure. With drug pressure and time, the strains will shift back to those that are drug tolerant/resistant. Q.

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