medium · GMAT Verbal
In a trial treating a common infection, patients given a 5-day antibiotic course relapsed no more often than those given the standard 10-day course. The shorter-course patients also carried fewer drug-resistant bacteria afterward. Both groups received the same drug at the same daily dose.
The statements above most strongly support which of the following?
- For this infection, halving the course length was not associated with more relapses despite reducing later resistant-bacteria levels.
- The 5-day course is more effective at curing the infection than the 10-day course.
- Shorter antibiotic courses are preferable for every type of infection.
- The standard 10-day course causes most cases of antibiotic resistance worldwide.
- Patients on the 10-day course took a higher daily dose of the drug.
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