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Vaccine Research

UGA’s intranasal COVID vaccine shows promise.

An engineered dog virus shows promise to promote an immune response

A team of researchers at the University of Georgia College of Veterinary Medicine has developed a COVID-19 vaccine candidate that has proven successful in promoting an immune response in early test models.

The team is led by Biao He, the Fred C. Davison Distinguished University Chair in Veterinary Medicine at UGA, and Drs. Stanley Perlman and Paul McCray of the University of Iowa department of microbiology and immunology. Together, they developed a promising vaccine for MERS-CoV, the coronavirus that causes Middle East Respiratory Syndrome, and quickly pivoted their research to focus on SARS-CoV-2.

The vaccines are based on a viral delivery platform developed by He containing modified strains of the virus that cause kennel cough in dogs, parainfluenza virus 5 (PIV5). The modified viruses produce proteins found in the two coronaviruses, specifically the spike proteins that form the “crown” or corona for which they are named. After the vaccine has been administered, cells are infected with the PIV5 virus. The body then begins to mount a defense to the MERS spike proteins produced by the modified virus—ultimately promoting an immunity to infection.

“When your dog is immunized against kennel cough, a similar vaccine is used. After immunization, the dog will shed this PIV5 for days. If you have a dog, you have been safely exposed to this virus many times.”

Biao He
Fred C. Davison Distinguished University Chair in Veterinary Medicine at UGA

While vaccine development is still in the early stages, the researchers hope that it will be successful in further tests. He hopes that the SARS-CoV-2 vaccine will be ready for FDA approval by the end of  the year.

“We have an opportunity now to use our technology to help people,” He said. “And, at the University of Georgia, we have the people, and we have the facilities. We have been able to  quickly mobilize resources to develop this vaccine.”

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