iodine in a concentration of 1:100 parts lugol's 5% in distilled water erraticated mrsa on 2 separate occaisions for my mom. The first time, she was tested to prove she was positive and then, after iodine body rinse, ear rinse and twice daily nasal rinses for 3 days showed negative on both tests.
The reason I knew it was gone for sure is that her high WBC count came way down to normal around 5-6 (range 4-10). Recently, she had high wbc and elevated temperature. After iodine, her wbc count came down to 5 from 14 and her temp was normal every day.
Note: for mrsa lesions, colloidal silver works very well, but I have never tried iodine on the lesions. I did resolve my mom's achiles tendon that was rupturing from mrsa induced by a fluoroquinolone antibiotic using colloidal silver.