COVID-19 Shows How Ecosystems and Human Health Intersect

While there’s uncertainty about how the novel coronavirus originally infected people, it might have started as viral spillover (transfer) from bats or other wild animals. One emerging hypothesis based on DNA evidence is that, because of natural habitat destruction, horseshoe bats in China were forced into cities. Under increased stress, the bats shed viruses that were picked up by people and perhaps other animals in an early infection cluster.