How does Antibiotic Resistance Occur?

Antibiotic resistance can occur when people use antibiotics improperly, such as not finishing off the entire prescription. When people do not do this, the little bit that is left in the bacteria grows resistant to that antibiotic and can spread to more people. You can find more information here: http://www.acponline.org/patients_families/diseases_conditions/antibiotic_resistance/
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