First, let's break up this argument into premises and conclusions.
Premises:
traditional strep treatment takes 7 days
many people stop taking their medication after three days and become infected again
A new antibiotic only takes three days towork
Conclusion : the new 3-day treatment will reduce reinfection rates as compared with the 7-day treatments.
A. Some of the people who are allergic to penicillin are likely to be allergic to the new antibiotic. --- out of scope.
B. A course of treatment
...
Premises:
traditional strep treatment takes 7 days
many people stop taking their medication after three days and become infected again
A new antibiotic only takes three days towork
Conclusion : the new 3-day treatment will reduce reinfection rates as compared with the 7-day treatments.
A. Some of the people who are allergic to penicillin are likely to be allergic to the new antibiotic. --- out of scope.
B. A course of treatment
...



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