Graham Rosser, a dedicated parasitologist and proud Mississippi State alumnus, has a fascinating career in veterinary and biological sciences. Rosser’s story began like many—a love for animals and an interest in science. As a biological sciences undergraduate at MSU, he initially considered a career in veterinary medicine, but a chance encounter with parasitology opened his eyes to an entirely new world, and he has never looked back.

With encouragement from his professor Linda Pote, Rosser enrolled in a graduate parasitology course. “I didn’t know much, but I jumped at the chance,” he said. That decision marked the beginning of a journey filled with research and discovery.

After completing his Ph.D., he was offered a position at MSU’s College of Veterinary Medicine, where he now leads a lab focused on parasites impacting the state’s vital catfish industry. Dr. Rosser’s team works to identify these parasites, study their life cycles, and develop ways to help producers reduce disease—ensuring healthier fish and stronger yields.

“It’s about problem solving for people,” he said. “If we can help the industry, we’re helping our community and our state. Catfish is one of Mississippi’s top commodities; it’s a huge contributor to the state’s economy.”

Rosser’s passion for his work extends far beyond his research. Around Halloween each year, he hosts the popular “Life After Dark: Parasites and Their Hosts” event, where students and community members can get up close with some of the strangest parasites from around the world. From eerie slides to preserved specimens, the showcase offers a window into a world few have seen.

“Parasites play a role in our ecosystem that’s as interesting as it is misunderstood,” he said. “Halloween seemed like the perfect time to share a glimpse into these amazing creatures and make it fun and accessible for anyone intrigued by or interested in what we do.”

For Rosser, the true reward lies in mentoring students and fostering their growth in science. In addition to research, he teaches first- and second-year veterinary students and serves as an advisor to postdoctoral students. He also is actively involved with several of the college’s outreach efforts, including the Study Abroad in Uganda One Health program and VetAspire, which gives high school and undergraduate students the opportunity to experience a day in the life of a veterinarian.

Rosser emphasizes that his greatest joy is watching his students excel and surpass his own achievements. “The most rewarding part of my job is working with students and seeing them grow,” he said. “When they go on to do amazing things, that’s the best.”

When asked what he loves most about his field, Rosser pointed to its incredible breadth and opportunity for lifelong learning. “I get to explore so many areas of science on a small scale because parasites exist in every imaginable context,” he said. “Just when I think I understand what a parasite is, I’m proven wrong.”