No.  WORLDSymposium 2026 will be held as a Hybrid symposium, offering both Live, In-Person presentations, and Virtual presentations. A Live (In-Person) presentation means you will attend WORLDSymposium 2026 in San Diego, CA, USA. A Virtual presentation will either be a livestream presentation via telecommunications, or a pre-recorded video presentation. (The final determination regarding Virtual presentation formats will be provided at the time of presentation acceptance). Preference will be given to abstracts which can be presented LIVE, In Person.