Steven J. Schweon is an RN and board-certified infection preventionist who specializes in the acute care, long-term care, and behavioral health clinical settings. Topics of interest include vaccine preventable diseases, outbreak prevention, surveillance, hand hygiene, and environmental hygiene.

The author has disclosed no financial relationships related to this article.

Adapted with permission from Schweon SJ. Diphtheria update. Nursing. 2023;53(6):46-49. doi:10.1097/01.NURSE.0000918540.45884.d3