https://www.sciencedaily.com/releases/2021/09/210928155119.htm > Still, Singh tested positive for COVID-19, most likely due to infection from the Delta variant, upon his arrival home in Boone County -- a diagnosis other fully vaccinated people and those who have already tested positive for the contagious virus were experiencing. He wanted to know why. > Following his recovery at home, Singh, a professor in the MU College of Veterinary Medicine and Bond Life Sciences Center, teamed up with MU undergraduate student Austin Spratt, Saathvik Kannan, a freshman at Hickman High School, and Siddappa Byrareddy, a professor at the University of Nebraska Medical Center, to analyze protein sequences for more than 300,000 COVID-19 samples of two emerging variants around the world, known as Delta and Delta Plus.