The new coronavirus outbreak is thought to have started in a food market in Wuhan, China.

DNA evidence suggests it’s likely related to bats (which also were the origin of the SARS coronavirus outbreak in 2003). But there’s also new, unconfirmed evidence, that the illegal pangolin trade may be implicated, according to Vox.

Disease expert Jonathan Epstein says it is "not known for certain" that this outbreak started with bats in an animal market."

Read his full interview with Vox here.