Dear Editor,

We have read the article by Sohrab Salimi et al. [1] entitled “Local vancomycin therapy to reduce surgical site infection in adult spine surgery: a randomized prospective study” with great interest and congratulate the authors for this thought-provoking topic; however, there are a few queries that need to be addressed:

  1. 1.

    It is nowhere mentioned about the surgeons who performed these surgeries. This becomes important as it is a well-known fact that the incidence of surgical site infection differs from surgeon to surgeon [2].

  2. 2.

    Did any of the cases with surgical site infection have dural tears intraoperatively? Multiple previous studies have shown dural tear cases to have higher incidence of infection [3, 4].

  3. 3.

    When was the negative suction drain opened postoperatively?

  4. 4.

    How many levels were instrumented in the patients who had surgical site infection? [5]

  5. 5.

    How could traumatic spine patients take a bath before the day of surgery?