CORRECTION ON PREVIOUS ANSWER: It's unlikely the band will make enough sound to damage your daughter's eardrum over just one performance. However, if you're concerned the earplugs you no doubt have for bathing should work just fine.
Protection from infection
Normal microbiota do not provide protection from infection by directly killing pathogens.
Immunity. Building up that protection is called immunization.
The peritoneum is at risk of infection with ruptured or perforated appendices.
The ears may bleed because of an ear infection. A ruptured or perforated eardrum may also cause bleeding and drainage.
protection against infection
if the defect is relatively large, or if there is a poor blood supply or an infection during the healing process
Infection Protection and Rejection
It could be an unrelated infection or another perforation or just an earache. Best to let a physician diagnose it hands-on.
stratum corneum
Will usually heal by itself within 2 months. Antibiotics and painkillers may prevent or treat infection and pain. If it does not heal, surgical repair (tympanoplasty) may be necessary.
The man had a perforated bowel which spilled infection into his peritoneal cavity.