CEE is contributing to COVID-END, a time-limited network that brings together more than 50 of the world’s leading evidence-synthesis, technology-assessment and guideline-development groups around the world hosted by McMaster University in Canada (https://www.mcmasterforum.org/networks/covid-end). COVID-END is an evidence service to support decision makers through the current Coronavirus pandemic. The service provides the best available evidence for users and identifies evidence gaps to help researchers focus their efforts generating new evidence where needed. The scope of COVID-END is global and interdisciplinary, but the network is composed predominantly of health-related groups and CEE is one of very few in the network that has an environmental perspective. Understandably the current emphasis is on evidence of effectiveness of health interventions to treat those contracting the disease, and to prevent the spread of the virus to others. But as the pandemic runs its course, emphasis will likely turn to the environmental circumstances in which the virus emerged in the human population and how society might take action to prevent further pandemics. Through utilising rigorous evidence synthesis methods, the CEE community can make an important contribution to building the evidence base for understanding the causes of the virus transmission from wild animals to human populations and how environmental management can reduce this risk of further transmissions of novel viruses.