PIZZA LUNCH PODCASTS
Uncovering the Complexity of Bartonellosis
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Beginning his career studying cat scratch disease, which is caused by a species of bacteria in the genus
Bartonella, Ed Breitschwerdt, a veterinarian and professor of medicine in infectious disease at the College of Veterinary Medicine at North Carolina State University, began to realize that this genus was rife with other species that can infect mammals; in 1993, he discovered a new species of
Bartonella that causes lupus-like symptoms in a dog named Tumbleweed.
Based on two decades of research, Dr. Breitschwerdt has shown that these bacteria can live in the bloodstream of mammals and are transmitted between them by a variety of insect vectors and by cat scratches. His work has linked
infection with a variety of chronic and acute symptoms that vary across species and can affect humans. But it hasn't been easy to study these infections: Once in the blood stream,
evades the immune system, is difficult to detect, and is easily misdiagnosed. Many questions remain about Bartonellosis.
Dr. Breitschwerdt goes into more depth with associate editor Katie L. Burke about his research on the bacteria Bartonella.
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PODCASTS: Expanding With the Cosmos
Using the Atacama Cosmology Telescope (ATC), a 6.5-meter microwave collector in Chile, cosmologists are piecing together the early history of the known universe. In an exclusive American Scientist interview, Arthur Kosowsky—a member of the ATC team and a professor in the Department of Physics and Astronomy at the University of Pittsburgh—discusses how he is using ATC to reach back in time billions of years to search for gravitational waves that could verify inflation and reveal unprecedented details about how the cosmos was born.
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