Petya Hristova is an assistant professor in the Department of Hygiene, Epidemiology, Infectious Diseases, Microbiology, and Parasitology at Trakia University in Stara Zagora, Bulgaria. Mirela Bruza-Augatis is a research scientist at the National Commission on Certification of Physician Assistants in Johns Creek, Ga., and an adjunct faculty member in the PA program at Seton Hall University in Nutley, N.J. Magdalena Platikanova is a professor in the Department of Hygiene, Epidemiology, Infectious Diseases, Microbiology, and Parasitology at Trakia University. The authors have disclosed no potential conflicts of interest, financial or otherwise.

Kathy Pedersen, MPAS, PA-C, department editor