In 2017, a team from the Institute found that coronaviruses from horseshoe bats at a cave in Yunnan had all the genetic pieces of the SARS virus. They said this could be the source, and that the human SARS virus probably came from this cave. The team studied the bats for five years. They said there was a village only a kilometer away, and because of this there was the risk of another bat virus like SARS affecting people.