Thank you for posting,
Using the term surgery might make it sound like a big procedure but it will probably be a small procedure called surgical debridement ( removal of death necrotic cells or tissues). It is possible that the E. coli skin infection
has complicated and caused tissues that are infected to die and that will require the doctor to remove them for proper healing.
You should not be worried as it is not an invasive procedure and can be done in an out patient unit
. You might be back the same day and only return for dressing and evaluation of the wound.
Hope this helps