The photos on pages 906 and 907 of the April 15 article “A one-health solution to the toxic algae problem” are not characteristic of harmful algal blooms caused by cyanobacteria. Rather, they appear to be green filamentous algae, which can pose an indirect threat to aquatic animals by rendering water hypoxic, especially at night or when the organisms die. It is important to the protection of human and animal health to be able to recognize the gross appearance of cyanobacteria. The two photos here are of HABs caused by cyanobacteria at lakes in Minnesota and New York. The blue color of cyanobacterial blooms, which is often most evident at the shoreline, develops as the organisms degenerate. Microscopic examinations of cyanobacterial cells and cyanobacterial toxin analyses by individuals with expertise in this area are also of great value.
The article “Assessing veterinary technician education” in the May 1, 2018, issue of JAVMA News, page 1036, gave an incorrect highest possible score for the Veterinary Technician National Examination. The highest possible score is 800. In addition, only one program is on probationary accreditation and falls below a 50 percent, three-year pass rate on the VTNE, not two as originally stated.