Researchers have discovered a new type of antibody that helps the COVID-19 virus infect cells, despite being designed to fight it. This antibody, called ConD-854, targets a specific part of the virus's spike protein but works in a way that's different from other antibodies that are meant to neutralize the virus. The scientists found that this antibody can enhance the virus's ability to enter cells, even though it was created by someone who had already been infected with the Delta variant of COVID-19. This discovery could help us better understand how our bodies respond to COVID-19 and potentially lead to new ways to design vaccines or treatments for the disease.