The opinions expressed in this supplement are those of the authors and are not attributable to the sponsor or the publisher, editor, or editorial board of the American Journal of Infection Control. Clinical judgement must guide each physician in weighing the benefits of treatment against the risk of toxicity. Dosages, indications, and methods of use for products referred to in these articles are not necessarily the same as indicated in the package insert for the product and may reflect the clinical experience of the authors or may be derived from the professional literature or other clinical sources. Because of differences between in vitro and in vivo systems and between laboratory animal models and clinical data in humans, in vitro and animal data may not correlate with clinical results. Consult complete prescribing information before administering.