Expert elicitation on drivers used to assess the emergence of COVID-19 in pets
An expert elicitation of knowledge was conducted, which consisted in gathering the opinion of people with recognized scientific expertise and/or experience in the field of COVID-19 in pets (Appendix S3 ). For guidance purposes, an explanatory letter accompanied the questionnaire that each expert had to fill out (Appendix S4 ). The questionnaire was prepared as an Excel file based onAppendix S2 .
Each expert was contacted personally and responded individually to the questionnaire. Data generated by the elicitation were based on the individual values provided by experts in order to capture the degree of variability of expert knowledge. The elicitation was performed from 24/04/20 to 15/05/20.