Final answer:
The emergent strain of C. difficile (Clostridium difficile 027) produces more toxin A and B compared to strain C due to genetic differences that enhance toxin production.
Step-by-step explanation:
The emergent strain of C. difficile (Clostridium difficile 027) produces more toxin A and B compared to strain C because of genetic differences. The production of toxins A and B is controlled by specific genes in the bacterial genome. In the case of C. difficile 027, these genes are more active or have specific mutations that enhance toxin production. This increased toxin production contributes to the virulence and severity of the infection caused by the emergent strain.