A 35-year-old female asked:
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5 year old positive for strep throat. treated with amoxicillin for 10 days. 1 week later strep returned. now given penicillan. will it work?

2 doctor answers
Dr. Ronald Ward
Specializes in ENT and Head and Neck Surgery
Strep: Should if usual bacteria and dx is correct. Will not if viral infection.
Answered on Nov 3, 2017
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Dr. Christine Hom
30 years experience Pediatrics
Strep diagnosed by bacterial culture should respond readily.
Oct 27, 2017
Dr. James Ferguson
46 years experience Pediatrics
Hard to say: Treatment failures do occur, but he could have been successfully treated but re-exposed & re-infected. Penicillin drugs kill strep, so that is not the only question. About 5-20% of the population can carry strep in their throat and never get sick, depending on the season. There may be a family member or close friend as a carrier.
Answered on Oct 27, 2017

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