Russia has been in the news for all the wrong reasons, and here's another concern to add to the list. Scientists are on the alert about the risk of another virus spilling over from animals to humans. This time it's Russian horseshoe bats and a coronavirus from the SARS family. It's known as Khosta 2 and while there has been no known human transmission so far, unlike Khosta 1 scientists say there is the possibility that it could occur. And it's not affected by vaccines for COVID-19. That's on this week's Cororonacast. Also on today's show: * Tracking new COVID variants: we look at 2.75.2