Q: My infant keeps getting perianal strep despite treatment. What's causing these recurring infections?
- Myeongchan Kim
- Dec 11, 2025
- 1 min read
Updated: Dec 15, 2025
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Question:
My 10-month-old son has been diagnosed with perianal strep for the third time in three months. After each diagnosis, he completed a 10-day course of amoxicillin, and for the second infection, we also used a topical antibiotic cream. I have been extremely careful with hygiene: I've bleach-cleaned his changing station, thrown out and replaced all diaper creams, and sanitized his bathtub. He no longer bathes with his older brother (5 years old), who is a known chronic strep carrier. My baby doesn't go to daycare, and we practice excellent handwashing. I'm frustrated with the repeated antibiotic courses and concerned about resistance. How does he keep getting reinfected, and what else can I do to prevent it?
Answer:
That's frustrating. Given your older son is a carrier, it sounds like he's the most likely source.
Think doorknobs, toys, light switches – places strep could transfer. Also, maybe consider a separate towel for your younger son even if they don't bathe together.

For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.




