This factsheet answers the following questions: What are zoonotic diseases? What are some examples of zoonotic diseases? Why are zoonotic diseases happening now? What causes zoonotic diseases? What is the connection between the environment and zoonotic diseases? What do we know about the new coronavirus (COVID-19)? Did COVID-19 come from wet markets? How can we protect ourselves from zoonotic diseases? What is UNEP doing to stop zoonotic diseases?