Eric S. Loker is Distinguished Professor of Biology, Curator of the Division of Parasites of the Museum of the Southwestern Biology, and Director of the COBRE Center for Evolutionary and Theoretical Immunology at the University of New Mexico where he has taught parasitology and related courses for many years. His research interests focus on the biology of schistosomes. Bruce V. Hofkin received his PhD from the University of New Mexico where he is currently a faculty member in the Department of Biology. His primary research interest is the epidemiology and control of vector-borne and snail-borne diseases.