COVID-19: exhibitors and visitors will be required to present a health pass to access the site on the opening days. It consists of providing one of the following elements : Certificate of vaccination doses + 2 weeks after the second injection OR Certificate of contamination + 15 days - 6 months OR Negative PCR or antigen test less than 48 hours old. There will opportunities to make antigen tests on-site, and enter the fair if results are negative.