 Bats are often reservoir hosts for various viruses, including those that can infect humans and livestock. In this study, researchers examined the viruses present in 149 individual bats from Yunnan Province, China. They found that most of the bats were infected with multiple viruses simultaneously, indicating frequent virus co-infections and spillovers between bats. Additionally, they identified five viruses that could potentially cause disease in humans or livestock, including one that was a recombinant SARS-like coronavirus that had been previously unknown. The authors concluded that these findings suggest that bats could serve as a source of emerging viruses, and that further studies should be conducted to better understand how these viruses spread and evolve. This article was authored by Jing Wang, Yuan Feipan, Li Fenyang, and others.