European Society for Immunodeficiencies (ESID) @esidsociety.bsky.social · 11/10/2026Small actions, big impact. Delegates can make #ESID2026 more sustainable with easy choices: 🚴 Walk, cycle or take the free bus ♻️ Bring a reusable bottle and recycle your badge 📱 Skip the printouts, use the app Discover more: bit.ly/3TKkIZz 000