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Breakthrough discovery will improve medical monitoring, preventive care for elephants

2024-03-06
(Press-News.org) SAN DIEGO–—Elephants are the natural carriers of a virus called Elephant Endotheliotropic Herpesvirus (EEHV) that can, for yet unknown reasons, cause profound clinical signs in some young elephants and be rapidly fatal. For nearly two decades, zoos and university partners have been working to study the virus and develop early detection protocols and treatment options.

Veterinarians and clinical pathology researchers at San Diego Zoo Wildlife Alliance (SDZWA) and the University of Copenhagen, Denmark, have recently made an important discovery, now published in the March 2024 Journal of Zoo and Wildlife Medicine. They found that population-based reference values for blood cell counts are not sensitive enough to detect critical deviations that frequently occur with active EEHV infection.

The researchers found that establishing baseline values for each elephant and comparing test results against that elephant’s own individual baseline provides more accurate interpretation of results, leading to earlier detection and intervention of clinical EEHV infection.

“Senior author and SDZWA senior veterinarian Dr. Kathryn Perrin completed an important study a few years ago, investigating cell count variability in Asian elephants,” said Dr. Rob Browning, lead author and clinical veterinarian at SDZWA. “This current research expands our understanding of blood parameter individuality to African elephants and will change how preventive medicine is applied at elephant care facilities that are routinely screening their elephants for clinical EEHV infection and other diseases. These results also provide a tool for elephant facilities that do not have established individual baseline blood values.” So-called “biological variation” studies have been minimally performed in veterinary medicine and this study would not have been possible without collaboration with Dr. Mads Kjelgaard-Hansen, a leading expert in this field.

When it comes to EEHV detection and treatment, every minute counts, and this new discovery will lead to lifesaving treatment. The authors suggest, without individual baselines for each elephant, important early indicators of an oncoming infection may be missed.

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About San Diego Zoo Wildlife Alliance 

San Diego Zoo Wildlife Alliance, a nonprofit conservation leader, inspires passion for nature and collaboration for a healthier world. The Alliance supports innovative conservation science through global partnerships. Through wildlife care, science expertise and collaboration, more than 44 endangered species have been reintroduced to native habitats. Annually, the Alliance reaches over 1 billion people, in person at the San Diego Zoo and San Diego Zoo Safari Park, and virtually in 150 countries through media channels, including San Diego Zoo Wildlife Explorers television programming in children’s hospitals in 14 countries. Wildlife Allies—members, donors and guests—make success possible.

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[Press-News.org] Breakthrough discovery will improve medical monitoring, preventive care for elephants