[No new polio cases in the semester ending] 31 December 2020

Created by Bruno Parga on 2017-12-23; known on 2023-01-01; judged wrong by Bruno Parga on 2020-09-13.

• Bruno Parga estimated 80% on 2017-12-23
• Bruno Parga estimated 3% on 2019-01-01
• Bruno Parga   judged this prediction wrong on 2020-09-13.