“It’s like bringing the kids to day care from different suburbs,” said Dr. Keith Poulsen, director of the Wisconsin Veterinary Diagnostic Laboratory. “As they commingle, that’s where the virus moves around on a global scale.”
“It’s like bringing the kids to day care from different suburbs,” said Dr. Keith Poulsen, director of the Wisconsin Veterinary Diagnostic Laboratory. “As they commingle, that’s where the virus moves around on a global scale.”