COVID-19 (IMAGE) University of California - Santa Cruz Caption Researchers found recombination of COVID-19, while uncommon, occurs most in the virus's spike protein region. Credit Centers for Disease Control and Protection Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.