Corrections and clarifications.
In the News article "Finding ;sustainable' ways to prevent parasitic diseases" by Rebecca Kolberg (24 June, p. 1859), mention is made of nylon gauze that is being distributed worldwide free of charge to filter Guinea worm larvae from drinking water. The cloth is donated by E. I. Dupont de Nemours & Company, Inc., and Precision Fabrics Group for distribution by Global 2000, Inc.